removed "using namespace" from examples

doc/examples/README.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/README.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/vsDHoEGWuGiwM0oh"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/y0porRuf7gTGQrIn"><b>online</b></a>
\ No newline at end of file

doc/examples/array.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/array.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/NeN8wmHsQGxFXC6L"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/TTykAqoDgbLzKxt3"><b>online</b></a>
\ No newline at end of file

doc/examples/at__object_t_key_type.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/at__object_t_key_type.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/3ir8W1OZ5KtbRz6r"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/wjOUJUwo2SO7q5u8"><b>online</b></a>
\ No newline at end of file

doc/examples/at__object_t_key_type_const.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/at__object_t_key_type_const.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/zwOKkXrKstDlMPjr"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/7gGtalpuoF4xE7VN"><b>online</b></a>
\ No newline at end of file

doc/examples/at__size_type.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/at__size_type.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/9Ae4DO4HJjULnq5j"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/Sa6XYQS7TJ5sGG8a"><b>online</b></a>
\ No newline at end of file

doc/examples/at__size_type_const.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/at__size_type_const.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/Ti47m4DY2lV4SWNV"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/PGQOjyIV7s5YnsQM"><b>online</b></a>
\ No newline at end of file

doc/examples/back.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/back.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/zB9tSkSVYIthfgj6"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/M9xQVJJLTE1qvTtm"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/Hrajl95QUa1Lplou"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/mSAAr3GATT6ciVjV"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__CompatibleArrayType.cpp

@@ -5,7 +5,7 @@
 #include <set>
 #include <unordered_set>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__CompatibleArrayType.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/vyrjruntW4ASDBKH"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/InYach9gNBDvA8QR"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__CompatibleIntegerNumberType.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__CompatibleIntegerNumberType.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/cyithYO7sPbXxK16"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/VDu3HkQPf0Rv5dzH"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__CompatibleNumberFloatType.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__CompatibleNumberFloatType.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/yO6SWuP9bEYvNEvX"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/BjDrTHvJMwFC3iLr"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__CompatibleObjectType.cpp

 #include <json.hpp>
 #include <unordered_map>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__CompatibleObjectType.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/FCiYtNwovQ84DWxl"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/ZJz4SFD4Iuy8OS4T"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__CompatibleStringType.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__CompatibleStringType.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/h8c1hfORMnVrJ1Ky"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/Fe1WNG7eJRaWYMM4"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__InputIt_InputIt.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__InputIt_InputIt.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/z2P1DpA8uSSlwgTl"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/Ulv0RYN6QoJ6ECVR"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__array_t.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__array_t.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/vwVgsv7w6YZUgctJ"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/T5FlYwVpQ1oXBuBH"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__basic_json.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__basic_json.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/wwzBU7cK8Xr2yiKJ"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/vPBv5smAPKUko4Qo"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__boolean_t.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__boolean_t.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/RzWnqhbfuvbHXCBJ"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/saCwetmQZaB8tQ24"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__const_int.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__const_int.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/BPk4vUc4kJPWX0rz"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/BzGFT02b2KTR6z2B"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__copyassignment.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__copyassignment.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/P8QWpucrWhov8JRR"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/Ib1A0jrFXwYhf0eA"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__list_init_t.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__list_init_t.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/IWIZSNthuHrT3AS6"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/r7SIosyJCePZZvqh"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__moveconstructor.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__moveconstructor.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/dvTtz7DIo8TDhYE6"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/y7ngrkT74SN0fFWG"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__nullptr_t.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__nullptr_t.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/hcERmrPzjmXeSzB8"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/Y7B27Mtrcp64PI9l"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__number_float_t.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__number_float_t.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/47cqX7AduSWn24lA"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/rsIsQEvaeJEaJx9c"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__number_integer_t.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__number_integer_t.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/RUSNdk5YEAr2vL4E"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/3aV9OONj8OfHPXBV"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__object_t.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__object_t.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/4IF0ofRq0nZcV8pI"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/YhDZ1WhldMdwBthI"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__size_type_basic_json.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__size_type_basic_json.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/dkznQmTMqulurCqD"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/OTJ7W8jL7z9qQlkL"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__string_t.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__string_t.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/S9jwK28ThNIGkdUI"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/ZRv2SsnLGdLzBhFO"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__string_t_value_type.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__string_t_value_type.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/xNtouqvB2OJBOwkv"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/xttjHgaxVqpfriXz"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__value.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__value.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/pehnjdIduvv90qfX"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/ejZBeBBPEBmYsPFz"><b>online</b></a>
\ No newline at end of file

doc/examples/basic_json__value_t.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/basic_json__value_t.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/ncOG8fdxNrISUNFj"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/fkrZveuulCw95PXF"><b>online</b></a>
\ No newline at end of file

doc/examples/begin.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/begin.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/Nwb94PEGlvnjrqj1"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/9HE53y23Ldu1xzQU"><b>online</b></a>
\ No newline at end of file

doc/examples/cbegin.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/cbegin.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/mWrMi5IrJjRILgir"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/8rGgyscFrA1fCiIn"><b>online</b></a>
\ No newline at end of file

doc/examples/cend.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/cend.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/0OHrFwFGvRuDKdfx"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/Zek4QM4kvKLUywGC"><b>online</b></a>
\ No newline at end of file

doc/examples/clear.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/clear.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/Ddggfbg18WXOIBkW"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/D6RJMyjkibQmKUC4"><b>online</b></a>
\ No newline at end of file

doc/examples/count.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/count.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/mPQHwiNeVa872Aky"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/GFOaqTzQCZeTQk3R"><b>online</b></a>
\ No newline at end of file

doc/examples/crbegin.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/crbegin.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/XA8jRF4u0UBKMVKT"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/ZVFFzaSjRzx81O7o"><b>online</b></a>
\ No newline at end of file

doc/examples/crend.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/crend.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/XHuFmdmwqZ7Tdw2U"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/EmWt4iCaVbSmTxUs"><b>online</b></a>
\ No newline at end of file

doc/examples/dump.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/dump.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/tkZFGPekIFMEQYY0"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/PjtHNsrmmgEeCFVp"><b>online</b></a>
\ No newline at end of file

doc/examples/empty.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/empty.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/8vK2Qdo2tJk3loVq"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/daiGc21CilMsU7ln"><b>online</b></a>
\ No newline at end of file

doc/examples/end.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/end.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/PTRnmRsywWUoknqU"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/7QIAVTX9fvOkHUrH"><b>online</b></a>
\ No newline at end of file

doc/examples/erase__IteratorType.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/erase__IteratorType.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/iqtEFeReXatgjqHy"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/DlwzEWGJkvmikaNi"><b>online</b></a>
\ No newline at end of file

doc/examples/erase__IteratorType_IteratorType.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/erase__IteratorType_IteratorType.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/4ZSaQAFaqyN8Vhop"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/ds4TH3IAYVLCGyIz"><b>online</b></a>
\ No newline at end of file

doc/examples/erase__key_type.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/erase__key_type.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/vQ4ipI1dlW8IZhNh"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/h6FfQqA0UIqdG6ca"><b>online</b></a>
\ No newline at end of file

doc/examples/erase__size_type.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/erase__size_type.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/foNekpKoDDTEfKuy"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/Fg7ut6CV4YBCsDbQ"><b>online</b></a>
\ No newline at end of file

doc/examples/find__key_type.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/find__key_type.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/q5oRles9a6IgEOkD"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/BfABW7AMVl4xqeoJ"><b>online</b></a>
\ No newline at end of file

doc/examples/front.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/front.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/OvihNTNV4XPwoSw8"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/NH4F08xGiQfNT71r"><b>online</b></a>
\ No newline at end of file

doc/examples/get__PointerType.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/get__PointerType.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/OQ6W9gVosCWDgJHS"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/iunIxpTIIy6vcWJZ"><b>online</b></a>
\ No newline at end of file

doc/examples/get__ValueType_const.cpp

 #include <json.hpp>
 #include <unordered_map>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/get__ValueType_const.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/4OkGAXhiCsa1E5Jx"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/7k9830oUxfGndWzT"><b>online</b></a>
\ No newline at end of file

doc/examples/get_ptr.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/get_ptr.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/Onaz3FY3sow5TEwH"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/NDeUS78poIDrGhIP"><b>online</b></a>
\ No newline at end of file

doc/examples/get_ref.cpp

 #include <json.hpp>
 
-using namespace nlohmann;
+using json = nlohmann::json;
 
 int main()
 {

doc/examples/get_ref.link

-<a target="_blank" href="http://melpon.org/wandbox/permlink/nBNBANVonG9HCQqQ"><b>online</b></a>
+<a target="_blank" href="http://melpon.org/wandbox/permlink/5IINd4ZXCINhlk8u"><b>online</b></a>
\ No newline at end of file