⚡ keys are now returned as const reference #1098

2018-05-26 13:26:40 +02:00 · 2018-05-26 13:26:40 +02:00 · 90eb0a91e0
commit 90eb0a91e0
parent 4639bb2c8f
3 changed files with 30 additions and 10 deletions
--- a/include/nlohmann/detail/iterators/iter_impl.hpp
+++ b/include/nlohmann/detail/iterators/iter_impl.hpp
@ -583,7 +583,7 @@ class iter_impl
    @brief  return the key of an object iterator
    @pre The iterator is initialized; i.e. `m_object != nullptr`.
    */
-    typename object_t::key_type key() const
+    const typename object_t::key_type& key() const
    {
        assert(m_object != nullptr);