Checks whether any of the types Ts is a specialization of the class template T

Synopsis

Declared in <mp‐units/ext/type_traits.h>

template<
    template<typename...> typename T,
    typename... Ts>
[[nodiscard]]
consteval
bool
contains();

Return Value

true if at least one of Ts is a specialization of T, false otherwise

Note

The return value should not be discarded.

Template Parameters

Name

Description

T

The class template (taking type parameters) to look for

Ts

The types to check

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