Florian Albrechtskirchinger 0d790397a2 Add type traits to check if a type is usable as object key ... Add type trait to check: * if a type is a specialization of a template. * if a type is a json_pointer. * if a type is a basic_json::{const_,}iterator. * if two types are comparable using a given comparison functor. * if a type is comparable to basic_json::object_t::key_type. * if a type has a member type is_transparent. * if a type is usable as object key. * if a type has an erase() function accepting a given KeyType. Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>		2022-04-25 22:49:17 +02:00
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json.hpp	Add type traits to check if a type is usable as object key	2022-04-25 22:49:17 +02:00