how to serialize std::map and std::set ?

[yanzixiang]

can I use this to serialize std::map and std::set ?
for example i define a set A,
I use JS::serializeStruct(A) give me a error.
expect the output is ["1" , "2", "3" ]...

[jorgen]

Hi,
I have been putting off making these TypeHandlers since then we have to include <map>, <set>, <unordered_set> in json_struct.h and suddenly everyone has has these includes just by including json_struct. I regret most of the includes in there already, but changing this can break user code, (I still have some members with spelling mistakes because chaning it will break code).

I have come up with this scheme where the TypeHandlers are guarded by their own include guards. So if you want the std::map TypeHandler then you will have to define JS_STL_MAP before including json_struct.h. The unit test should give you the idea: https://github.com/jorgen/json_struct/blob/master/tests/json-unordered-map.cpp#L4.

This is available in 3ddf92e.

[yanzixiang]

you just add JS_STL_MAP to support map ,
what about set ?
without this,
how to serialize a list without knowing how many items in it ?