[mdspan.extents.cmp]

# 23 Containers library [[containers]](./#containers)

## 23.7 Views [[views]](views#mdspan.extents.cmp)

### 23.7.3 Multidimensional access [[views.multidim]](views.multidim#mdspan.extents.cmp)

#### 23.7.3.3 Class template extents [[mdspan.extents]](mdspan.extents#cmp)

#### 23.7.3.3.5 Comparison operators [mdspan.extents.cmp]

[ð](#lib:operator==,extents)

`template<class OtherIndexType, size_t... OtherExtents>
  friend constexpr bool operator==(const extents& lhs,
                                   const extents<OtherIndexType, OtherExtents...>& rhs) noexcept;
`

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/containers.tex#L21478)

*Returns*: true if lhs.rank() equals rhs.rank() and
if lhs.extent(r) equals rhs.extent(r) for every rank index r of rhs,
otherwise false[.](#1.sentence-1)
