Don't accept std::string as container

This commit is contained in:
Stephan van Veen 2019-05-13 22:52:26 +02:00
parent a6ceffdb63
commit 20a7d90abe

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@ -58,6 +58,9 @@ struct is_container_helper {};
template<typename T, typename _ = void>
struct is_container : std::false_type {};
template<>
struct is_container<std::string> : std::false_type {};
template<typename T>
struct is_container<T, std::conditional_t<
false, is_container_helper<