📝 updated documentation for update() function #661

doc/examples/update__range.cpp

@@ -0,0 +1,17 @@
+#include <iostream>
+#include "json.hpp"
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create two JSON objects
+    json o1 = R"( {"color": "red", "price": 17.99} )"_json;
+    json o2 = R"( {"color": "blue", "speed": 100} )"_json;
+
+    // add all keys from o2 to o1 (updating "color")
+    o1.update(o2.begin(), o2.end());
+
+    // output updated object o1
+    std::cout << std::setw(2) << o1 << '\n';
+}