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[string.accessors]
# 27 Strings library [[strings]](./#strings)
## 27.4 String classes [[string.classes]](string.classes#string.accessors)
### 27.4.3 Class template basic_string [[basic.string]](basic.string#string.accessors)
#### 27.4.3.8 String operations [[string.ops]](string.ops#string.accessors)
#### 27.4.3.8.1 Accessors [string.accessors]
[🔗](#lib:c_str,basic_string)
`constexpr const charT* c_str() const noexcept;
constexpr const charT* data() const noexcept;
`
[1](#1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L4297)
*Returns*: A pointer p such that p + i == addressof(operator[](i)) for eachi in [0, size()][.](#1.sentence-1)
[2](#2)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L4302)
*Complexity*: Constant time[.](#2.sentence-1)
[3](#3)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L4306)
*Remarks*: The program shall not modify any of the values stored in the character array; otherwise, the behavior is undefined[.](#3.sentence-1)
[🔗](#lib:data,basic_string_)
`constexpr charT* data() noexcept;
`
[4](#4)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L4317)
*Returns*: A pointer p such that p + i == addressof(operator[](i)) for eachi in [0, size()][.](#4.sentence-1)
[5](#5)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L4322)
*Complexity*: Constant time[.](#5.sentence-1)
[6](#6)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L4326)
*Remarks*: The program shall not modify the value stored at p + size() to any value other than charT(); otherwise, the behavior is undefined[.](#6.sentence-1)
[🔗](#lib:operator_basic_string_view,basic_string)
`constexpr operator basic_string_view<charT, traits>() const noexcept;
`
[7](#7)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L4338)
*Effects*: Equivalent to:return basic_string_view<charT, traits>(data(), size());
[🔗](#lib:get_allocator,basic_string)
`constexpr allocator_type get_allocator() const noexcept;
`
[8](#8)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L4350)
*Returns*: A copy of theAllocator object used to construct the string or, if that allocator has been replaced, a
copy of the most recent replacement[.](#8.sentence-1)