28 lines
1.1 KiB
Markdown
28 lines
1.1 KiB
Markdown
[concept.same]
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# 18 Concepts library [[concepts]](./#concepts)
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## 18.4 Language-related concepts [[concepts.lang]](concepts.lang#concept.same)
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### 18.4.2 Concept same_as [concept.same]
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[ð](#itemdecl:1)
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`template<class T, class U>
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concept [same-as-impl](#concept:same-as-impl "18.4.2 Concept same_as [concept.same]") = [is_same_v](meta.type.synop#lib:is_same_v "21.3.3 Header <type_traits> synopsis [meta.type.synop]")<T, U>; // exposition only
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template<class T, class U>
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concept [same_as](#concept:same_as "18.4.2 Concept same_as [concept.same]") = [same-as-impl](#concept:same-as-impl "18.4.2 Concept same_as [concept.same]")<T, U> && [same-as-impl](#concept:same-as-impl "18.4.2 Concept same_as [concept.same]")<U, T>;
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`
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/concepts.tex#L309)
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[*Note [1](#note-1)*:
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[same_as](#concept:same_as "18.4.2 Concept same_as [concept.same]")<T, U> subsumes [same_as](#concept:same_as "18.4.2 Concept same_as [concept.same]")<U, T> and
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vice versa[.](#1.sentence-1)
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â *end note*]
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