Difference between revisions of "cpp/concepts/relation"
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− | {{cpp/title|relation}} | + | {{cpp/title|relation {{mark since c++20}}}} |
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The concept {{tt|relation<R, T, U>}} specifies that {{tt|R}} defines a binary relation over the set of expressions whose type and value category are those encoded by either {{tt|T}} or {{tt|U}}. | The concept {{tt|relation<R, T, U>}} specifies that {{tt|R}} defines a binary relation over the set of expressions whose type and value category are those encoded by either {{tt|T}} or {{tt|U}}. | ||
+ | |||
+ | ===References=== | ||
+ | {{ref std c++23}} | ||
+ | {{ref std|section=18.7.5|title=Concept {{tt|relation}}|id=concept.relation}} | ||
+ | {{ref std end}} | ||
+ | {{ref std c++20}} | ||
+ | {{ref std|section=18.7.5|title=Concept {{tt|relation}}|id=concept.relation}} | ||
+ | {{ref std end}} | ||
{{langlinks|es|ja|ru|zh}} | {{langlinks|es|ja|ru|zh}} |
Latest revision as of 10:54, 7 September 2024
Defined in header <concepts>
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template< class R, class T, class U > concept relation = |
(1) | (since C++20) |
The concept relation<R, T, U>
specifies that R
defines a binary relation over the set of expressions whose type and value category are those encoded by either T
or U
.
[edit] References
- C++23 standard (ISO/IEC 14882:2024):
- 18.7.5 Concept
relation
[concept.relation]
- 18.7.5 Concept
- C++20 standard (ISO/IEC 14882:2020):
- 18.7.5 Concept
relation
[concept.relation]
- 18.7.5 Concept