[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)