C++ named requirements: BinaryTypeTrait (since C++11)
From cppreference.com
C++
C++ named requirements
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A BinaryTypeTrait is a class template that describes a relationship between its two template type parameters with a std::integral_constant (typically std::bool_constant
Requirements
- DefaultConstructible and CopyConstructible
- Takes two template type parameters (additional template parameters are optional and allowed).
- Publicly and unambiguously derived from a specialization of std::integral_constant, known as its base characteristic.
- The member names of the base characteristic are not hidden and are unambiguously available.
Standard library
The following standard library class templates satisfy BinaryTypeTrait:
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(C++11)
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checks if two types are the same (class template) |
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(C++11)
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checks if a type is a base of the other type (class template) |
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(C++26)
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checks if a type is a virtual base of the other type (class template) |
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(C++11)(C++20)
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checks if a type can be converted to the other type (class template) |
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(C++20)
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checks if two types are layout-compatible (class template) |
| checks if a type is a pointer-interconvertible (initial) base of another type (class template) |
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| checks if a type can be invoked (as if by std::invoke) with the given argument types (class template) |
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(C++11)
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checks if the specified type supports uses-allocator construction (class template) |