eagine::no_enum_value< T, Tag > Struct Template Reference

Class representing undefined value of a (typically C-API) symbolic constant. More...

#include <eagine/enum_class.hpp>

Public Types
using	value_type = T
	The constant or enumerator value type.
using	tag_type = Tag
	The tag type specified as template argument.

Public Member Functions
constexpr	operator T () const noexcept
	Explicit conversion to the value type.
constexpr	operator bool () const noexcept
	Indicates whether the value is valid or not (always false here).

Detailed Description

template<typename T, typename Tag = nothing_t>
struct eagine::no_enum_value< T, Tag >

Class representing undefined value of a (typically C-API) symbolic constant.

Template Parameters

T	the constant or enumerator value type.
Tag	a tag type that can be used to customize some operations.

See also

enum_class

enum_value

any_enum_value

opt_enum_value

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The documentation for this struct was generated from the following file:

• eagine/enum_class.hpp