cppdraft_translate/cppdraft/meta/unary/general.md

[meta.unary.general]

21 Metaprogramming library [meta]

21.3 Metaprogramming and type traits [type.traits]

21.3.6 Unary type traits [meta.unary]

21.3.6.1 General [meta.unary.general]

1

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Subclause [meta.unary] contains templates that may be used to query the properties of a type at compile time.

2

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Each of these templates shall be aCpp17UnaryTypeTrait with a base characteristic oftrue_type if the corresponding condition is true, otherwisefalse_type.