error: static_assert failed

[ghost]

I got this error when I built my application.

/json.hpp:843:9: error: static_assert failed "could not find to_json() method       in T's namespace"         static_assert(sizeof(BasicJsonType) == 0

[nlohmann]

This error occurs if you try to assign an unsupported type to json, e.g.

MyClass foo;
json j = foo;

The second line tries to find a way to convert MyClass to json and does this by searching for a to_json function in the namespace of the class (see https://github.com/nlohmann/json#arbitrary-types-conversions for more information).

Without more context of your program, I'm afraid I cannot help more.

[nlohmann]

@SpilledMango Any news on this?

[ghost]

No, it's fine.