std::nontype, std::nontype_t - cppreference.com (original) (raw)

Defined in header
template< auto V > struct nontype_t { explicit nontype_t() = default; }; (1) (since C++26)
template< auto V > constexpr std::nontype_t<V> nontype {}; (2) (since C++26)

  1. The class template std::nontype_t can be used in the constructor's parameter list to match the intended tag.

  2. The corresponding std::nontype instance of (1) is a disambiguation argument tag that can be passed to the constructors of std::function_ref to indicate that the contained object should be constructed with the value of the constant template parameter V.

[edit] Template parameters

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