From 1bdb6acb1fb003a9bb8cb7771618f1630e78f7d0 Mon Sep 17 00:00:00 2001
From: Niels <niels.lohmann@gmail.com>
Date: Wed, 8 Apr 2015 22:23:40 +0200
Subject: [PATCH] overworked type conversion

---
 src/json.hpp      | 1215 ++++++++++++++++++++++++++++++++-------------
 src/json.hpp.re2c |  192 +++++--
 test/unit.cpp     |  102 ++++
 3 files changed, 1116 insertions(+), 393 deletions(-)

diff --git a/src/json.hpp b/src/json.hpp
index 7114fdfe..b83a0331 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -58,16 +58,15 @@ namespace nlohmann
 // Helper to determine whether there's a key_type for T.
 // http://stackoverflow.com/a/7728728/266378
 template<typename T>
-struct has_key_type
+struct has_mapped_type
 {
   private:
-    template<typename C> static char test(typename C::key_type*);
+    template<typename C> static char test(typename C::mapped_type*);
     template<typename C> static int  test(...);
   public:
     enum { value = sizeof(test<T>(0)) == sizeof(char) };
 };
 
-
 /*!
 @brief JSON
 
@@ -814,7 +813,7 @@ class basic_json
         return m_type;
     }
 
-
+  private:
     //////////////////////
     // value conversion //
     //////////////////////
@@ -822,89 +821,206 @@ class basic_json
     /// get an object (explicit)
     template <class T, typename
               std::enable_if<
-                  std::is_constructible<typename T::key_type, typename object_t::key_type>::value and
-                  std::is_constructible<typename T::mapped_type, basic_json>::value, int>::type
-              = 0>
-    inline T get() const
+                  std::is_convertible<typename object_t::key_type, typename T::key_type>::value and
+                  std::is_convertible<basic_json, typename T::mapped_type>::value
+                  , int>::type = 0>
+    inline T get_impl(T*) const
     {
         switch (m_type)
         {
             case (value_t::object):
+            {
                 return T(m_value.object->begin(), m_value.object->end());
+            }
             default:
+            {
                 throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
+        }
+    }
+
+    /// get an object (explicit)
+    inline object_t get_impl(object_t*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::object):
+            {
+                return *(m_value.object);
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to object");
+            }
         }
     }
 
     /// get an array (explicit)
     template <class T, typename
               std::enable_if<
-                  not std::is_same<T, string_t>::value and
-                  not has_key_type<T>::value and
-                  std::is_constructible<typename T::value_type, basic_json>::value, int>::type
-              = 0>
-    inline T get() const
+                  std::is_convertible<basic_json, typename T::value_type>::value and
+                  not std::is_same<basic_json, typename T::value_type>::value and
+                  not std::is_arithmetic<T>::value and
+                  not std::is_convertible<std::string, T>::value and
+                  not has_mapped_type<T>::value
+                  , int>::type = 0>
+    inline T get_impl(T*) const
     {
         switch (m_type)
         {
             case (value_t::array):
-                return T(m_value.array->begin(), m_value.array->end());
+            {
+                T to_vector;
+                //to_vector.reserve(m_value.array->size());
+                std::transform(m_value.array->begin(), m_value.array->end(),
+                               std::inserter(to_vector, to_vector.end()), [](basic_json i)
+                {
+                    return i.get<typename T::value_type>();
+                });
+                return to_vector;
+
+                //   return T(m_value.array->begin(), m_value.array->end());
+            }
             default:
+            {
                 throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
+        }
+    }
+
+    /// get an array (explicit)
+    template <class T, typename
+              std::enable_if<
+                  std::is_convertible<basic_json, T>::value and
+                  not std::is_same<basic_json, T>::value
+                  , int>::type = 0>
+    inline std::vector<T> get_impl(std::vector<T>*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::array):
+            {
+                std::vector<T> to_vector;
+                to_vector.reserve(m_value.array->size());
+                std::transform(m_value.array->begin(), m_value.array->end(),
+                               std::inserter(to_vector, to_vector.end()), [](basic_json i)
+                {
+                    return i.get<T>();
+                });
+                return to_vector;
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
+        }
+    }
+
+    /// get an array (explicit)
+    template <class T, typename
+              std::enable_if<
+                  std::is_same<basic_json, typename T::value_type>::value and
+                  not has_mapped_type<T>::value
+                  , int>::type = 0>
+    inline T get_impl(T*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::array):
+            {
+                return T(m_value.array->begin(), m_value.array->end());
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
+        }
+    }
+
+    inline array_t get_impl(array_t*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::array):
+            {
+                return *(m_value.array);
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to array");
+            }
         }
     }
 
     /// get a string (explicit)
     template <typename T, typename
               std::enable_if<
-                  std::is_constructible<T, string_t>::value, int>::type
-              = 0>
-    inline T get() const
+                  std::is_convertible<string_t, T>::value
+                  , int>::type = 0>
+    inline T get_impl(T*) const
     {
         switch (m_type)
         {
             case (value_t::string):
+            {
                 return *m_value.string;
+            }
             default:
+            {
                 throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
-        }
-    }
-
-    /// get a boolean (explicit)
-    template <typename T, typename
-              std::enable_if<
-                  std::is_same<boolean_t, T>::value, int>::type
-              = 0>
-    inline T get() const
-    {
-        switch (m_type)
-        {
-            case (value_t::boolean):
-                return m_value.boolean;
-            default:
-                throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
         }
     }
 
     /// get a number (explicit)
     template<typename T, typename
              std::enable_if<
-                 not std::is_same<boolean_t, T>::value and
-                 std::is_arithmetic<T>::value, int>::type
-             = 0>
-    inline T get() const
+                 std::is_arithmetic<T>::value
+                 , int>::type = 0>
+    inline T get_impl(T*) const
     {
         switch (m_type)
         {
             case (value_t::number_integer):
+            {
                 return static_cast<T>(m_value.number_integer);
+            }
             case (value_t::number_float):
+            {
                 return static_cast<T>(m_value.number_float);
+            }
             default:
+            {
                 throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
         }
     }
 
+    /// get a boolean (explicit)
+    inline boolean_t get_impl(boolean_t*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::boolean):
+            {
+                return m_value.boolean;
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to " + typeid(boolean_t).name());
+            }
+        }
+    }
+
+  public:
+    /// get a value (explicit)
+    // <http://stackoverflow.com/a/8315197/266378>
+    template<typename T>
+    inline T get() const
+    {
+        return get_impl(static_cast<T*>(nullptr));
+    }
+
     /// get a value (implicit)
     template<typename T>
     inline operator T() const
@@ -1077,7 +1193,7 @@ class basic_json
         // at only works for objects
         if (m_type != value_t::object)
         {
-            throw std::runtime_error("cannot use at with " + type_name());
+            throw std::runtime_error("cannot use erase with " + type_name());
         }
 
         return m_value.object->erase(key);
@@ -3371,369 +3487,758 @@ class basic_json
             // remember the begin of the token
             m_start = m_cursor;
 
-            
-    {
-        lexer_char_t yych;
-        unsigned int yyaccept = 0;
-        static const unsigned char yybm[] = {
-              0,  64,  64,  64,  64,  64,  64,  64, 
-             64,  96,  96,  64,  64,  96,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             96,  64,   0,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-            192, 192, 192, 192, 192, 192, 192, 192, 
-            192, 192,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,   0,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-             64,  64,  64,  64,  64,  64,  64,  64, 
-        };
 
-        if ((m_limit - m_cursor) < 5) { yyfill(); };
-        yych = *m_cursor;
-        if (yych <= '9') {
-            if (yych <= ' ') {
-                if (yych <= '\n') {
-                    if (yych <= 0x00) goto basic_json_parser_27;
-                    if (yych <= 0x08) goto basic_json_parser_29;
-                    if (yych >= '\n') goto basic_json_parser_4;
-                } else {
-                    if (yych == '\r') goto basic_json_parser_2;
-                    if (yych <= 0x1F) goto basic_json_parser_29;
+            {
+                lexer_char_t yych;
+                unsigned int yyaccept = 0;
+                static const unsigned char yybm[] =
+                {
+                    0,  64,  64,  64,  64,  64,  64,  64,
+                    64,  96,  96,  64,  64,  96,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    96,  64,   0,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    192, 192, 192, 192, 192, 192, 192, 192,
+                    192, 192,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,   0,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                    64,  64,  64,  64,  64,  64,  64,  64,
+                };
+
+                if ((m_limit - m_cursor) < 5)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
+                if (yych <= '9')
+                {
+                    if (yych <= ' ')
+                    {
+                        if (yych <= '\n')
+                        {
+                            if (yych <= 0x00)
+                            {
+                                goto basic_json_parser_27;
+                            }
+                            if (yych <= 0x08)
+                            {
+                                goto basic_json_parser_29;
+                            }
+                            if (yych >= '\n')
+                            {
+                                goto basic_json_parser_4;
+                            }
+                        }
+                        else
+                        {
+                            if (yych == '\r')
+                            {
+                                goto basic_json_parser_2;
+                            }
+                            if (yych <= 0x1F)
+                            {
+                                goto basic_json_parser_29;
+                            }
+                        }
+                    }
+                    else
+                    {
+                        if (yych <= ',')
+                        {
+                            if (yych == '"')
+                            {
+                                goto basic_json_parser_26;
+                            }
+                            if (yych <= '+')
+                            {
+                                goto basic_json_parser_29;
+                            }
+                            goto basic_json_parser_14;
+                        }
+                        else
+                        {
+                            if (yych <= '-')
+                            {
+                                goto basic_json_parser_22;
+                            }
+                            if (yych <= '/')
+                            {
+                                goto basic_json_parser_29;
+                            }
+                            if (yych <= '0')
+                            {
+                                goto basic_json_parser_23;
+                            }
+                            goto basic_json_parser_25;
+                        }
+                    }
                 }
-            } else {
-                if (yych <= ',') {
-                    if (yych == '"') goto basic_json_parser_26;
-                    if (yych <= '+') goto basic_json_parser_29;
-                    goto basic_json_parser_14;
-                } else {
-                    if (yych <= '-') goto basic_json_parser_22;
-                    if (yych <= '/') goto basic_json_parser_29;
-                    if (yych <= '0') goto basic_json_parser_23;
-                    goto basic_json_parser_25;
+                else
+                {
+                    if (yych <= 'm')
+                    {
+                        if (yych <= '\\')
+                        {
+                            if (yych <= ':')
+                            {
+                                goto basic_json_parser_16;
+                            }
+                            if (yych == '[')
+                            {
+                                goto basic_json_parser_6;
+                            }
+                            goto basic_json_parser_29;
+                        }
+                        else
+                        {
+                            if (yych <= ']')
+                            {
+                                goto basic_json_parser_8;
+                            }
+                            if (yych == 'f')
+                            {
+                                goto basic_json_parser_21;
+                            }
+                            goto basic_json_parser_29;
+                        }
+                    }
+                    else
+                    {
+                        if (yych <= 'z')
+                        {
+                            if (yych <= 'n')
+                            {
+                                goto basic_json_parser_18;
+                            }
+                            if (yych == 't')
+                            {
+                                goto basic_json_parser_20;
+                            }
+                            goto basic_json_parser_29;
+                        }
+                        else
+                        {
+                            if (yych <= '{')
+                            {
+                                goto basic_json_parser_10;
+                            }
+                            if (yych == '}')
+                            {
+                                goto basic_json_parser_12;
+                            }
+                            goto basic_json_parser_29;
+                        }
+                    }
                 }
-            }
-        } else {
-            if (yych <= 'm') {
-                if (yych <= '\\') {
-                    if (yych <= ':') goto basic_json_parser_16;
-                    if (yych == '[') goto basic_json_parser_6;
-                    goto basic_json_parser_29;
-                } else {
-                    if (yych <= ']') goto basic_json_parser_8;
-                    if (yych == 'f') goto basic_json_parser_21;
-                    goto basic_json_parser_29;
-                }
-            } else {
-                if (yych <= 'z') {
-                    if (yych <= 'n') goto basic_json_parser_18;
-                    if (yych == 't') goto basic_json_parser_20;
-                    goto basic_json_parser_29;
-                } else {
-                    if (yych <= '{') goto basic_json_parser_10;
-                    if (yych == '}') goto basic_json_parser_12;
-                    goto basic_json_parser_29;
-                }
-            }
-        }
 basic_json_parser_2:
-        ++m_cursor;
-        yych = *m_cursor;
-        goto basic_json_parser_5;
+                ++m_cursor;
+                yych = *m_cursor;
+                goto basic_json_parser_5;
 basic_json_parser_3:
-        { return scan(); }
+                {
+                    return scan();
+                }
 basic_json_parser_4:
-        ++m_cursor;
-        if (m_limit <= m_cursor) { yyfill(); };
-        yych = *m_cursor;
+                ++m_cursor;
+                if (m_limit <= m_cursor)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
 basic_json_parser_5:
-        if (yybm[0+yych] & 32) {
-            goto basic_json_parser_4;
-        }
-        goto basic_json_parser_3;
+                if (yybm[0 + yych] & 32)
+                {
+                    goto basic_json_parser_4;
+                }
+                goto basic_json_parser_3;
 basic_json_parser_6:
-        ++m_cursor;
-        { return token_type::begin_array; }
+                ++m_cursor;
+                {
+                    return token_type::begin_array;
+                }
 basic_json_parser_8:
-        ++m_cursor;
-        { return token_type::end_array; }
+                ++m_cursor;
+                {
+                    return token_type::end_array;
+                }
 basic_json_parser_10:
-        ++m_cursor;
-        { return token_type::begin_object; }
+                ++m_cursor;
+                {
+                    return token_type::begin_object;
+                }
 basic_json_parser_12:
-        ++m_cursor;
-        { return token_type::end_object; }
+                ++m_cursor;
+                {
+                    return token_type::end_object;
+                }
 basic_json_parser_14:
-        ++m_cursor;
-        { return token_type::value_separator; }
+                ++m_cursor;
+                {
+                    return token_type::value_separator;
+                }
 basic_json_parser_16:
-        ++m_cursor;
-        { return token_type::name_separator; }
+                ++m_cursor;
+                {
+                    return token_type::name_separator;
+                }
 basic_json_parser_18:
-        yyaccept = 0;
-        yych = *(m_marker = ++m_cursor);
-        if (yych == 'u') goto basic_json_parser_59;
+                yyaccept = 0;
+                yych = *(m_marker = ++m_cursor);
+                if (yych == 'u')
+                {
+                    goto basic_json_parser_59;
+                }
 basic_json_parser_19:
-        { return token_type::parse_error; }
+                {
+                    return token_type::parse_error;
+                }
 basic_json_parser_20:
-        yyaccept = 0;
-        yych = *(m_marker = ++m_cursor);
-        if (yych == 'r') goto basic_json_parser_55;
-        goto basic_json_parser_19;
+                yyaccept = 0;
+                yych = *(m_marker = ++m_cursor);
+                if (yych == 'r')
+                {
+                    goto basic_json_parser_55;
+                }
+                goto basic_json_parser_19;
 basic_json_parser_21:
-        yyaccept = 0;
-        yych = *(m_marker = ++m_cursor);
-        if (yych == 'a') goto basic_json_parser_50;
-        goto basic_json_parser_19;
+                yyaccept = 0;
+                yych = *(m_marker = ++m_cursor);
+                if (yych == 'a')
+                {
+                    goto basic_json_parser_50;
+                }
+                goto basic_json_parser_19;
 basic_json_parser_22:
-        yych = *++m_cursor;
-        if (yych <= '/') goto basic_json_parser_19;
-        if (yych <= '0') goto basic_json_parser_49;
-        if (yych <= '9') goto basic_json_parser_40;
-        goto basic_json_parser_19;
+                yych = *++m_cursor;
+                if (yych <= '/')
+                {
+                    goto basic_json_parser_19;
+                }
+                if (yych <= '0')
+                {
+                    goto basic_json_parser_49;
+                }
+                if (yych <= '9')
+                {
+                    goto basic_json_parser_40;
+                }
+                goto basic_json_parser_19;
 basic_json_parser_23:
-        yyaccept = 1;
-        yych = *(m_marker = ++m_cursor);
-        if (yych <= 'D') {
-            if (yych == '.') goto basic_json_parser_42;
-        } else {
-            if (yych <= 'E') goto basic_json_parser_43;
-            if (yych == 'e') goto basic_json_parser_43;
-        }
+                yyaccept = 1;
+                yych = *(m_marker = ++m_cursor);
+                if (yych <= 'D')
+                {
+                    if (yych == '.')
+                    {
+                        goto basic_json_parser_42;
+                    }
+                }
+                else
+                {
+                    if (yych <= 'E')
+                    {
+                        goto basic_json_parser_43;
+                    }
+                    if (yych == 'e')
+                    {
+                        goto basic_json_parser_43;
+                    }
+                }
 basic_json_parser_24:
-        { return token_type::value_number; }
+                {
+                    return token_type::value_number;
+                }
 basic_json_parser_25:
-        yyaccept = 1;
-        yych = *(m_marker = ++m_cursor);
-        goto basic_json_parser_41;
+                yyaccept = 1;
+                yych = *(m_marker = ++m_cursor);
+                goto basic_json_parser_41;
 basic_json_parser_26:
-        yyaccept = 0;
-        yych = *(m_marker = ++m_cursor);
-        if (yych <= 0x00) goto basic_json_parser_19;
-        goto basic_json_parser_31;
+                yyaccept = 0;
+                yych = *(m_marker = ++m_cursor);
+                if (yych <= 0x00)
+                {
+                    goto basic_json_parser_19;
+                }
+                goto basic_json_parser_31;
 basic_json_parser_27:
-        ++m_cursor;
-        { return token_type::end_of_input; }
+                ++m_cursor;
+                {
+                    return token_type::end_of_input;
+                }
 basic_json_parser_29:
-        yych = *++m_cursor;
-        goto basic_json_parser_19;
+                yych = *++m_cursor;
+                goto basic_json_parser_19;
 basic_json_parser_30:
-        ++m_cursor;
-        if (m_limit <= m_cursor) { yyfill(); };
-        yych = *m_cursor;
+                ++m_cursor;
+                if (m_limit <= m_cursor)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
 basic_json_parser_31:
-        if (yybm[0+yych] & 64) {
-            goto basic_json_parser_30;
-        }
-        if (yych <= 0x00) goto basic_json_parser_32;
-        if (yych <= '"') goto basic_json_parser_34;
-        goto basic_json_parser_33;
-basic_json_parser_32:
-        m_cursor = m_marker;
-        if (yyaccept == 0) {
-            goto basic_json_parser_19;
-        } else {
-            goto basic_json_parser_24;
-        }
-basic_json_parser_33:
-        ++m_cursor;
-        if (m_limit <= m_cursor) { yyfill(); };
-        yych = *m_cursor;
-        if (yych <= 'e') {
-            if (yych <= '/') {
-                if (yych == '"') goto basic_json_parser_30;
-                if (yych <= '.') goto basic_json_parser_32;
-                goto basic_json_parser_30;
-            } else {
-                if (yych <= '\\') {
-                    if (yych <= '[') goto basic_json_parser_32;
+                if (yybm[0 + yych] & 64)
+                {
                     goto basic_json_parser_30;
-                } else {
-                    if (yych == 'b') goto basic_json_parser_30;
+                }
+                if (yych <= 0x00)
+                {
                     goto basic_json_parser_32;
                 }
-            }
-        } else {
-            if (yych <= 'q') {
-                if (yych <= 'f') goto basic_json_parser_30;
-                if (yych == 'n') goto basic_json_parser_30;
-                goto basic_json_parser_32;
-            } else {
-                if (yych <= 's') {
-                    if (yych <= 'r') goto basic_json_parser_30;
-                    goto basic_json_parser_32;
-                } else {
-                    if (yych <= 't') goto basic_json_parser_30;
-                    if (yych <= 'u') goto basic_json_parser_36;
-                    goto basic_json_parser_32;
+                if (yych <= '"')
+                {
+                    goto basic_json_parser_34;
+                }
+                goto basic_json_parser_33;
+basic_json_parser_32:
+                m_cursor = m_marker;
+                if (yyaccept == 0)
+                {
+                    goto basic_json_parser_19;
+                }
+                else
+                {
+                    goto basic_json_parser_24;
+                }
+basic_json_parser_33:
+                ++m_cursor;
+                if (m_limit <= m_cursor)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
+                if (yych <= 'e')
+                {
+                    if (yych <= '/')
+                    {
+                        if (yych == '"')
+                        {
+                            goto basic_json_parser_30;
+                        }
+                        if (yych <= '.')
+                        {
+                            goto basic_json_parser_32;
+                        }
+                        goto basic_json_parser_30;
+                    }
+                    else
+                    {
+                        if (yych <= '\\')
+                        {
+                            if (yych <= '[')
+                            {
+                                goto basic_json_parser_32;
+                            }
+                            goto basic_json_parser_30;
+                        }
+                        else
+                        {
+                            if (yych == 'b')
+                            {
+                                goto basic_json_parser_30;
+                            }
+                            goto basic_json_parser_32;
+                        }
+                    }
+                }
+                else
+                {
+                    if (yych <= 'q')
+                    {
+                        if (yych <= 'f')
+                        {
+                            goto basic_json_parser_30;
+                        }
+                        if (yych == 'n')
+                        {
+                            goto basic_json_parser_30;
+                        }
+                        goto basic_json_parser_32;
+                    }
+                    else
+                    {
+                        if (yych <= 's')
+                        {
+                            if (yych <= 'r')
+                            {
+                                goto basic_json_parser_30;
+                            }
+                            goto basic_json_parser_32;
+                        }
+                        else
+                        {
+                            if (yych <= 't')
+                            {
+                                goto basic_json_parser_30;
+                            }
+                            if (yych <= 'u')
+                            {
+                                goto basic_json_parser_36;
+                            }
+                            goto basic_json_parser_32;
+                        }
+                    }
                 }
-            }
-        }
 basic_json_parser_34:
-        ++m_cursor;
-        { return token_type::value_string; }
+                ++m_cursor;
+                {
+                    return token_type::value_string;
+                }
 basic_json_parser_36:
-        ++m_cursor;
-        if (m_limit <= m_cursor) { yyfill(); };
-        yych = *m_cursor;
-        if (yych <= '@') {
-            if (yych <= '/') goto basic_json_parser_32;
-            if (yych >= ':') goto basic_json_parser_32;
-        } else {
-            if (yych <= 'F') goto basic_json_parser_37;
-            if (yych <= '`') goto basic_json_parser_32;
-            if (yych >= 'g') goto basic_json_parser_32;
-        }
+                ++m_cursor;
+                if (m_limit <= m_cursor)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
+                if (yych <= '@')
+                {
+                    if (yych <= '/')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                    if (yych >= ':')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                }
+                else
+                {
+                    if (yych <= 'F')
+                    {
+                        goto basic_json_parser_37;
+                    }
+                    if (yych <= '`')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                    if (yych >= 'g')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                }
 basic_json_parser_37:
-        ++m_cursor;
-        if (m_limit <= m_cursor) { yyfill(); };
-        yych = *m_cursor;
-        if (yych <= '@') {
-            if (yych <= '/') goto basic_json_parser_32;
-            if (yych >= ':') goto basic_json_parser_32;
-        } else {
-            if (yych <= 'F') goto basic_json_parser_38;
-            if (yych <= '`') goto basic_json_parser_32;
-            if (yych >= 'g') goto basic_json_parser_32;
-        }
+                ++m_cursor;
+                if (m_limit <= m_cursor)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
+                if (yych <= '@')
+                {
+                    if (yych <= '/')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                    if (yych >= ':')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                }
+                else
+                {
+                    if (yych <= 'F')
+                    {
+                        goto basic_json_parser_38;
+                    }
+                    if (yych <= '`')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                    if (yych >= 'g')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                }
 basic_json_parser_38:
-        ++m_cursor;
-        if (m_limit <= m_cursor) { yyfill(); };
-        yych = *m_cursor;
-        if (yych <= '@') {
-            if (yych <= '/') goto basic_json_parser_32;
-            if (yych >= ':') goto basic_json_parser_32;
-        } else {
-            if (yych <= 'F') goto basic_json_parser_39;
-            if (yych <= '`') goto basic_json_parser_32;
-            if (yych >= 'g') goto basic_json_parser_32;
-        }
+                ++m_cursor;
+                if (m_limit <= m_cursor)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
+                if (yych <= '@')
+                {
+                    if (yych <= '/')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                    if (yych >= ':')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                }
+                else
+                {
+                    if (yych <= 'F')
+                    {
+                        goto basic_json_parser_39;
+                    }
+                    if (yych <= '`')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                    if (yych >= 'g')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                }
 basic_json_parser_39:
-        ++m_cursor;
-        if (m_limit <= m_cursor) { yyfill(); };
-        yych = *m_cursor;
-        if (yych <= '@') {
-            if (yych <= '/') goto basic_json_parser_32;
-            if (yych <= '9') goto basic_json_parser_30;
-            goto basic_json_parser_32;
-        } else {
-            if (yych <= 'F') goto basic_json_parser_30;
-            if (yych <= '`') goto basic_json_parser_32;
-            if (yych <= 'f') goto basic_json_parser_30;
-            goto basic_json_parser_32;
-        }
+                ++m_cursor;
+                if (m_limit <= m_cursor)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
+                if (yych <= '@')
+                {
+                    if (yych <= '/')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                    if (yych <= '9')
+                    {
+                        goto basic_json_parser_30;
+                    }
+                    goto basic_json_parser_32;
+                }
+                else
+                {
+                    if (yych <= 'F')
+                    {
+                        goto basic_json_parser_30;
+                    }
+                    if (yych <= '`')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                    if (yych <= 'f')
+                    {
+                        goto basic_json_parser_30;
+                    }
+                    goto basic_json_parser_32;
+                }
 basic_json_parser_40:
-        yyaccept = 1;
-        m_marker = ++m_cursor;
-        if ((m_limit - m_cursor) < 3) { yyfill(); };
-        yych = *m_cursor;
+                yyaccept = 1;
+                m_marker = ++m_cursor;
+                if ((m_limit - m_cursor) < 3)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
 basic_json_parser_41:
-        if (yybm[0+yych] & 128) {
-            goto basic_json_parser_40;
-        }
-        if (yych <= 'D') {
-            if (yych != '.') goto basic_json_parser_24;
-        } else {
-            if (yych <= 'E') goto basic_json_parser_43;
-            if (yych == 'e') goto basic_json_parser_43;
-            goto basic_json_parser_24;
-        }
+                if (yybm[0 + yych] & 128)
+                {
+                    goto basic_json_parser_40;
+                }
+                if (yych <= 'D')
+                {
+                    if (yych != '.')
+                    {
+                        goto basic_json_parser_24;
+                    }
+                }
+                else
+                {
+                    if (yych <= 'E')
+                    {
+                        goto basic_json_parser_43;
+                    }
+                    if (yych == 'e')
+                    {
+                        goto basic_json_parser_43;
+                    }
+                    goto basic_json_parser_24;
+                }
 basic_json_parser_42:
-        yych = *++m_cursor;
-        if (yych <= '/') goto basic_json_parser_32;
-        if (yych <= '9') goto basic_json_parser_47;
-        goto basic_json_parser_32;
+                yych = *++m_cursor;
+                if (yych <= '/')
+                {
+                    goto basic_json_parser_32;
+                }
+                if (yych <= '9')
+                {
+                    goto basic_json_parser_47;
+                }
+                goto basic_json_parser_32;
 basic_json_parser_43:
-        yych = *++m_cursor;
-        if (yych <= ',') {
-            if (yych != '+') goto basic_json_parser_32;
-        } else {
-            if (yych <= '-') goto basic_json_parser_44;
-            if (yych <= '/') goto basic_json_parser_32;
-            if (yych <= '9') goto basic_json_parser_45;
-            goto basic_json_parser_32;
-        }
+                yych = *++m_cursor;
+                if (yych <= ',')
+                {
+                    if (yych != '+')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                }
+                else
+                {
+                    if (yych <= '-')
+                    {
+                        goto basic_json_parser_44;
+                    }
+                    if (yych <= '/')
+                    {
+                        goto basic_json_parser_32;
+                    }
+                    if (yych <= '9')
+                    {
+                        goto basic_json_parser_45;
+                    }
+                    goto basic_json_parser_32;
+                }
 basic_json_parser_44:
-        yych = *++m_cursor;
-        if (yych <= '/') goto basic_json_parser_32;
-        if (yych >= ':') goto basic_json_parser_32;
+                yych = *++m_cursor;
+                if (yych <= '/')
+                {
+                    goto basic_json_parser_32;
+                }
+                if (yych >= ':')
+                {
+                    goto basic_json_parser_32;
+                }
 basic_json_parser_45:
-        ++m_cursor;
-        if (m_limit <= m_cursor) { yyfill(); };
-        yych = *m_cursor;
-        if (yych <= '/') goto basic_json_parser_24;
-        if (yych <= '9') goto basic_json_parser_45;
-        goto basic_json_parser_24;
+                ++m_cursor;
+                if (m_limit <= m_cursor)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
+                if (yych <= '/')
+                {
+                    goto basic_json_parser_24;
+                }
+                if (yych <= '9')
+                {
+                    goto basic_json_parser_45;
+                }
+                goto basic_json_parser_24;
 basic_json_parser_47:
-        yyaccept = 1;
-        m_marker = ++m_cursor;
-        if ((m_limit - m_cursor) < 3) { yyfill(); };
-        yych = *m_cursor;
-        if (yych <= 'D') {
-            if (yych <= '/') goto basic_json_parser_24;
-            if (yych <= '9') goto basic_json_parser_47;
-            goto basic_json_parser_24;
-        } else {
-            if (yych <= 'E') goto basic_json_parser_43;
-            if (yych == 'e') goto basic_json_parser_43;
-            goto basic_json_parser_24;
-        }
+                yyaccept = 1;
+                m_marker = ++m_cursor;
+                if ((m_limit - m_cursor) < 3)
+                {
+                    yyfill();
+                };
+                yych = *m_cursor;
+                if (yych <= 'D')
+                {
+                    if (yych <= '/')
+                    {
+                        goto basic_json_parser_24;
+                    }
+                    if (yych <= '9')
+                    {
+                        goto basic_json_parser_47;
+                    }
+                    goto basic_json_parser_24;
+                }
+                else
+                {
+                    if (yych <= 'E')
+                    {
+                        goto basic_json_parser_43;
+                    }
+                    if (yych == 'e')
+                    {
+                        goto basic_json_parser_43;
+                    }
+                    goto basic_json_parser_24;
+                }
 basic_json_parser_49:
-        yyaccept = 1;
-        yych = *(m_marker = ++m_cursor);
-        if (yych <= 'D') {
-            if (yych == '.') goto basic_json_parser_42;
-            goto basic_json_parser_24;
-        } else {
-            if (yych <= 'E') goto basic_json_parser_43;
-            if (yych == 'e') goto basic_json_parser_43;
-            goto basic_json_parser_24;
-        }
+                yyaccept = 1;
+                yych = *(m_marker = ++m_cursor);
+                if (yych <= 'D')
+                {
+                    if (yych == '.')
+                    {
+                        goto basic_json_parser_42;
+                    }
+                    goto basic_json_parser_24;
+                }
+                else
+                {
+                    if (yych <= 'E')
+                    {
+                        goto basic_json_parser_43;
+                    }
+                    if (yych == 'e')
+                    {
+                        goto basic_json_parser_43;
+                    }
+                    goto basic_json_parser_24;
+                }
 basic_json_parser_50:
-        yych = *++m_cursor;
-        if (yych != 'l') goto basic_json_parser_32;
-        yych = *++m_cursor;
-        if (yych != 's') goto basic_json_parser_32;
-        yych = *++m_cursor;
-        if (yych != 'e') goto basic_json_parser_32;
-        ++m_cursor;
-        { return token_type::literal_false; }
+                yych = *++m_cursor;
+                if (yych != 'l')
+                {
+                    goto basic_json_parser_32;
+                }
+                yych = *++m_cursor;
+                if (yych != 's')
+                {
+                    goto basic_json_parser_32;
+                }
+                yych = *++m_cursor;
+                if (yych != 'e')
+                {
+                    goto basic_json_parser_32;
+                }
+                ++m_cursor;
+                {
+                    return token_type::literal_false;
+                }
 basic_json_parser_55:
-        yych = *++m_cursor;
-        if (yych != 'u') goto basic_json_parser_32;
-        yych = *++m_cursor;
-        if (yych != 'e') goto basic_json_parser_32;
-        ++m_cursor;
-        { return token_type::literal_true; }
+                yych = *++m_cursor;
+                if (yych != 'u')
+                {
+                    goto basic_json_parser_32;
+                }
+                yych = *++m_cursor;
+                if (yych != 'e')
+                {
+                    goto basic_json_parser_32;
+                }
+                ++m_cursor;
+                {
+                    return token_type::literal_true;
+                }
 basic_json_parser_59:
-        yych = *++m_cursor;
-        if (yych != 'l') goto basic_json_parser_32;
-        yych = *++m_cursor;
-        if (yych != 'l') goto basic_json_parser_32;
-        ++m_cursor;
-        { return token_type::literal_null; }
-    }
+                yych = *++m_cursor;
+                if (yych != 'l')
+                {
+                    goto basic_json_parser_32;
+                }
+                yych = *++m_cursor;
+                if (yych != 'l')
+                {
+                    goto basic_json_parser_32;
+                }
+                ++m_cursor;
+                {
+                    return token_type::literal_null;
+                }
+            }
 
 
         }
diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index df9bf239..a88facf7 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -58,16 +58,15 @@ namespace nlohmann
 // Helper to determine whether there's a key_type for T.
 // http://stackoverflow.com/a/7728728/266378
 template<typename T>
-struct has_key_type
+struct has_mapped_type
 {
   private:
-    template<typename C> static char test(typename C::key_type*);
+    template<typename C> static char test(typename C::mapped_type*);
     template<typename C> static int  test(...);
   public:
     enum { value = sizeof(test<T>(0)) == sizeof(char) };
 };
 
-
 /*!
 @brief JSON
 
@@ -814,7 +813,7 @@ class basic_json
         return m_type;
     }
 
-
+  private:
     //////////////////////
     // value conversion //
     //////////////////////
@@ -822,89 +821,206 @@ class basic_json
     /// get an object (explicit)
     template <class T, typename
               std::enable_if<
-                  std::is_constructible<typename T::key_type, typename object_t::key_type>::value and
-                  std::is_constructible<typename T::mapped_type, basic_json>::value, int>::type
-              = 0>
-    inline T get() const
+                  std::is_convertible<typename object_t::key_type, typename T::key_type>::value and
+                  std::is_convertible<basic_json, typename T::mapped_type>::value
+                  , int>::type = 0>
+    inline T get_impl(T*) const
     {
         switch (m_type)
         {
             case (value_t::object):
+            {
                 return T(m_value.object->begin(), m_value.object->end());
+            }
             default:
+            {
                 throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
+        }
+    }
+
+    /// get an object (explicit)
+    inline object_t get_impl(object_t*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::object):
+            {
+                return *(m_value.object);
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to object");
+            }
         }
     }
 
     /// get an array (explicit)
     template <class T, typename
               std::enable_if<
-                  not std::is_same<T, string_t>::value and
-                  not has_key_type<T>::value and
-                  std::is_constructible<typename T::value_type, basic_json>::value, int>::type
-              = 0>
-    inline T get() const
+                  std::is_convertible<basic_json, typename T::value_type>::value and
+                  not std::is_same<basic_json, typename T::value_type>::value and
+                  not std::is_arithmetic<T>::value and
+                  not std::is_convertible<std::string, T>::value and
+                  not has_mapped_type<T>::value
+                  , int>::type = 0>
+    inline T get_impl(T*) const
     {
         switch (m_type)
         {
             case (value_t::array):
-                return T(m_value.array->begin(), m_value.array->end());
+            {
+                T to_vector;
+                //to_vector.reserve(m_value.array->size());
+                std::transform(m_value.array->begin(), m_value.array->end(),
+                               std::inserter(to_vector, to_vector.end()), [](basic_json i)
+                {
+                    return i.get<typename T::value_type>();
+                });
+                return to_vector;
+
+                //   return T(m_value.array->begin(), m_value.array->end());
+            }
             default:
+            {
                 throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
+        }
+    }
+
+    /// get an array (explicit)
+    template <class T, typename
+              std::enable_if<
+                  std::is_convertible<basic_json, T>::value and
+                  not std::is_same<basic_json, T>::value
+                  , int>::type = 0>
+    inline std::vector<T> get_impl(std::vector<T>*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::array):
+            {
+                std::vector<T> to_vector;
+                to_vector.reserve(m_value.array->size());
+                std::transform(m_value.array->begin(), m_value.array->end(),
+                               std::inserter(to_vector, to_vector.end()), [](basic_json i)
+                {
+                    return i.get<T>();
+                });
+                return to_vector;
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
+        }
+    }
+
+    /// get an array (explicit)
+    template <class T, typename
+              std::enable_if<
+                  std::is_same<basic_json, typename T::value_type>::value and
+                  not has_mapped_type<T>::value
+                  , int>::type = 0>
+    inline T get_impl(T*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::array):
+            {
+                return T(m_value.array->begin(), m_value.array->end());
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
+        }
+    }
+
+    inline array_t get_impl(array_t*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::array):
+            {
+                return *(m_value.array);
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to array");
+            }
         }
     }
 
     /// get a string (explicit)
     template <typename T, typename
               std::enable_if<
-                  std::is_constructible<T, string_t>::value, int>::type
-              = 0>
-    inline T get() const
+                  std::is_convertible<string_t, T>::value
+                  , int>::type = 0>
+    inline T get_impl(T*) const
     {
         switch (m_type)
         {
             case (value_t::string):
+            {
                 return *m_value.string;
+            }
             default:
+            {
                 throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
-        }
-    }
-
-    /// get a boolean (explicit)
-    template <typename T, typename
-              std::enable_if<
-                  std::is_same<boolean_t, T>::value, int>::type
-              = 0>
-    inline T get() const
-    {
-        switch (m_type)
-        {
-            case (value_t::boolean):
-                return m_value.boolean;
-            default:
-                throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
         }
     }
 
     /// get a number (explicit)
     template<typename T, typename
              std::enable_if<
-                 not std::is_same<boolean_t, T>::value and
-                 std::is_arithmetic<T>::value, int>::type
-             = 0>
-    inline T get() const
+                 std::is_arithmetic<T>::value
+                 , int>::type = 0>
+    inline T get_impl(T*) const
     {
         switch (m_type)
         {
             case (value_t::number_integer):
+            {
                 return static_cast<T>(m_value.number_integer);
+            }
             case (value_t::number_float):
+            {
                 return static_cast<T>(m_value.number_float);
+            }
             default:
+            {
                 throw std::logic_error("cannot cast " + type_name() + " to " + typeid(T).name());
+            }
         }
     }
 
+    /// get a boolean (explicit)
+    inline boolean_t get_impl(boolean_t*) const
+    {
+        switch (m_type)
+        {
+            case (value_t::boolean):
+            {
+                return m_value.boolean;
+            }
+            default:
+            {
+                throw std::logic_error("cannot cast " + type_name() + " to " + typeid(boolean_t).name());
+            }
+        }
+    }
+
+  public:
+    /// get a value (explicit)
+    // <http://stackoverflow.com/a/8315197/266378>
+    template<typename T>
+    inline T get() const
+    {
+        return get_impl(static_cast<T*>(nullptr));
+    }
+
     /// get a value (implicit)
     template<typename T>
     inline operator T() const
@@ -1077,7 +1193,7 @@ class basic_json
         // at only works for objects
         if (m_type != value_t::object)
         {
-            throw std::runtime_error("cannot use at with " + type_name());
+            throw std::runtime_error("cannot use erase with " + type_name());
         }
 
         return m_value.object->erase(key);
diff --git a/test/unit.cpp b/test/unit.cpp
index bc9edc24..cd79db69 100644
--- a/test/unit.cpp
+++ b/test/unit.cpp
@@ -2006,6 +2006,108 @@ TEST_CASE("value conversion")
             CHECK(json(n).m_value.number_float == Approx(j.m_value.number_float));
         }
     }
+
+    SECTION("more involved conversions")
+    {
+        SECTION("object-like STL containers")
+        {
+            json j1 = {{"one", 1}, {"two", 2}, {"three", 3}};
+            json j2 = {{"one", 1.1}, {"two", 2.2}, {"three", 3.3}};
+            json j3 = {{"one", true}, {"two", false}, {"three", true}};
+            json j4 = {{"one", "eins"}, {"two", "zwei"}, {"three", "drei"}};
+
+            SECTION("std::map")
+            {
+                auto m1 = j1.get<std::map<std::string, int>>();
+                auto m2 = j2.get<std::map<std::string, double>>();
+                auto m3 = j3.get<std::map<std::string, bool>>();
+                //auto m4 = j4.get<std::map<std::string, std::string>>();
+            }
+
+            SECTION("std::unordered_map")
+            {
+                auto m1 = j1.get<std::unordered_map<std::string, int>>();
+                auto m2 = j2.get<std::unordered_map<std::string, double>>();
+                auto m3 = j3.get<std::unordered_map<std::string, bool>>();
+                //auto m4 = j4.get<std::unordered_map<std::string, std::string>>();
+                //CHECK(m4["one"] == "eins");
+            }
+
+            SECTION("std::multimap")
+            {
+                auto m1 = j1.get<std::multimap<std::string, int>>();
+                auto m2 = j2.get<std::multimap<std::string, double>>();
+                auto m3 = j3.get<std::multimap<std::string, bool>>();
+                //auto m4 = j4.get<std::multimap<std::string, std::string>>();
+                //CHECK(m4["one"] == "eins");
+            }
+
+            SECTION("std::unordered_multimap")
+            {
+                auto m1 = j1.get<std::unordered_multimap<std::string, int>>();
+                auto m2 = j2.get<std::unordered_multimap<std::string, double>>();
+                auto m3 = j3.get<std::unordered_multimap<std::string, bool>>();
+                //auto m4 = j4.get<std::unordered_multimap<std::string, std::string>>();
+                //CHECK(m4["one"] == "eins");
+            }
+        }
+
+        SECTION("array-like STL containers")
+        {
+            json j1 = {1, 2, 3, 4};
+            json j2 = {1.2, 2.3, 3.4, 4.5};
+            json j3 = {true, false, true};
+            json j4 = {"one", "two", "three"};
+
+            SECTION("std::list")
+            {
+                auto m1 = j1.get<std::list<int>>();
+                auto m2 = j2.get<std::list<double>>();
+                auto m3 = j3.get<std::list<bool>>();
+                auto m4 = j4.get<std::list<std::string>>();
+            }
+
+            //SECTION("std::forward_list")
+            //{
+            //    auto m1 = j1.get<std::forward_list<int>>();
+            //    auto m2 = j2.get<std::forward_list<double>>();
+            //    auto m3 = j3.get<std::forward_list<bool>>();
+            //    auto m4 = j4.get<std::forward_list<std::string>>();
+            //}
+
+            SECTION("std::vector")
+            {
+                auto m1 = j1.get<std::vector<int>>();
+                auto m2 = j2.get<std::vector<double>>();
+                auto m3 = j3.get<std::vector<bool>>();
+                auto m4 = j4.get<std::vector<std::string>>();
+            }
+
+            SECTION("std::deque")
+            {
+                auto m1 = j1.get<std::deque<int>>();
+                auto m2 = j2.get<std::deque<double>>();
+                auto m3 = j3.get<std::deque<bool>>();
+                auto m4 = j4.get<std::deque<std::string>>();
+            }
+
+            SECTION("std::set")
+            {
+                auto m1 = j1.get<std::set<int>>();
+                auto m2 = j2.get<std::set<double>>();
+                auto m3 = j3.get<std::set<bool>>();
+                auto m4 = j4.get<std::set<std::string>>();
+            }
+
+            SECTION("std::unordered_set")
+            {
+                auto m1 = j1.get<std::unordered_set<int>>();
+                auto m2 = j2.get<std::unordered_set<double>>();
+                auto m3 = j3.get<std::unordered_set<bool>>();
+                auto m4 = j4.get<std::unordered_set<std::string>>();
+            }
+        }
+    }
 }
 
 TEST_CASE("element access")