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[alg.req.permutable]
# 24 Iterators library [[iterators]](./#iterators)
## 24.3 Iterator requirements [[iterator.requirements]](iterator.requirements#alg.req.permutable)
### 24.3.7 Common algorithm requirements [[alg.req]](alg.req#permutable)
#### 24.3.7.6 Concept permutable [alg.req.permutable]
[1](#1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L2691)
The [permutable](#concept:permutable "24.3.7.6Concept permutable[alg.req.permutable]") concept specifies the common requirements
of algorithms that reorder elements in place by moving or swapping them[.](#1.sentence-1)
template<class I>concept [permutable](#concept:permutable "24.3.7.6Concept permutable[alg.req.permutable]") =[forward_iterator](iterator.concept.forward#concept:forward_iterator "24.3.4.11Concept forward_­iterator[iterator.concept.forward]")<I> &&[indirectly_movable_storable](alg.req.ind.move#concept:indirectly_movable_storable "24.3.7.2Concept indirectly_­movable[alg.req.ind.move]")<I, I> &&[indirectly_swappable](alg.req.ind.swap#concept:indirectly_swappable "24.3.7.4Concept indirectly_­swappable[alg.req.ind.swap]")<I, I>;