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Leonov Artur (Depish)
2025-10-25 03:02:53 +03:00
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[alg.req.ind.swap]
# 24 Iterators library [[iterators]](./#iterators)
## 24.3 Iterator requirements [[iterator.requirements]](iterator.requirements#alg.req.ind.swap)
### 24.3.7 Common algorithm requirements [[alg.req]](alg.req#ind.swap)
#### 24.3.7.4 Concept indirectly_swappable [alg.req.ind.swap]
[1](#1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L2659)
The [indirectly_swappable](#concept:indirectly_swappable "24.3.7.4 Concept indirectly_­swappable [alg.req.ind.swap]") concept specifies a swappable relationship
between the values referenced by two [indirectly_readable](iterator.concept.readable#concept:indirectly_readable "24.3.4.2 Concept indirectly_­readable [iterator.concept.readable]") types[.](#1.sentence-1)
template<class I1, class I2 = I1>concept [indirectly_swappable](#concept:indirectly_swappable "24.3.7.4 Concept indirectly_­swappable [alg.req.ind.swap]") =[indirectly_readable](iterator.concept.readable#concept:indirectly_readable "24.3.4.2 Concept indirectly_­readable [iterator.concept.readable]")<I1> && [indirectly_readable](iterator.concept.readable#concept:indirectly_readable "24.3.4.2 Concept indirectly_­readable [iterator.concept.readable]")<I2> &&requires(const I1 i1, const I2 i2) { ranges::iter_swap(i1, i1);
ranges::iter_swap(i2, i2);
ranges::iter_swap(i1, i2);
ranges::iter_swap(i2, i1); };