std::experimental::basic_string_view - cppreference.com
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Merged into ISO C++ The functionality described on this page was merged into the mainline ISO C++ standard as of 3/2016, see std::basic_string_view (since C++17) |
template< class CharT, class Traits = std::char_traits<CharT> > class basic_string_view; |
(library fundamentals TS) | |
The class template basic_string_view describes an object that can refer to a constant contiguous sequence of char-like objects with the first element of the sequence at position zero.
A typical implementation holds only two members: a pointer to constant CharT and a size.
Several typedefs for common character types are provided:
Defined in header | |
| Type | Definition |
| std::experimental::string_view | std::experimental::basic_string_view<char>
|
| std::experimental::wstring_view | std::experimental::basic_string_view<wchar_t>
|
| std::experimental::u16string_view | std::experimental::basic_string_view<char16_t>
|
| std::experimental::u32string_view | std::experimental::basic_string_view<char32_t>
|
Template parameters
| CharT | - | character type |
| Traits | - | traits class specifying the operations on the character type |
Member types
| Member type | Definition |
traits_type
|
Traits
|
value_type
|
CharT
|
pointer
|
CharT*
|
const_pointer
|
const CharT*
|
reference
|
CharT&
|
const_reference
|
const CharT&
|
const_iterator
|
implementation-defined LegacyRandomAccessIterator |
iterator
|
const_iterator
|
reverse_iterator
|
const_reverse_iterator
|
const_reverse_iterator
|
std::reverse_iterator<const_iterator>
|
size_type
|
std::size_t |
difference_type
|
std::ptrdiff_t |
Note: iterator and const_iterator are the same type because string views are views into constant character sequences.
Member functions
constructs a basic_string_view (public member function) [edit] | |
| assigns a view (public member function) [edit] | |
Iterators | |
| returns an iterator to the beginning (public member function) [edit] | |
| returns an iterator to the end (public member function) [edit] | |
| returns a reverse iterator to the beginning (public member function) [edit] | |
| returns a reverse iterator to the end (public member function) [edit] | |
Element access | |
| access specified character (public member function) [edit] | |
| access specified character with bounds checking (public member function) [edit] | |
| accesses the first character (public member function) [edit] | |
| accesses the last character (public member function) [edit] | |
| returns a pointer to the first character of a view (public member function) [edit] | |
Capacity | |
| returns the number of characters (public member function) [edit] | |
| returns the maximum number of characters (public member function) [edit] | |
| checks whether the view is empty (public member function) [edit] | |
Modifiers | |
| shrinks the view by moving its start forward (public member function) [edit] | |
| shrinks the view by moving its end backward (public member function) [edit] | |
| swaps the contents (public member function) [edit] | |
Operations | |
| creates a string from the view (public member function) [edit] | |
| copies characters (public member function) [edit] | |
| returns a substring (public member function) [edit] | |
| compares two views (public member function) [edit] | |
| find characters in the view (public member function) [edit] | |
| find the last occurrence of a substring (public member function) [edit] | |
| find first occurrence of characters (public member function) [edit] | |
| find last occurrence of characters (public member function) [edit] | |
| find first absence of characters (public member function) [edit] | |
| find last absence of characters (public member function) [edit] | |
Constants | |
[static] |
special value. The exact meaning depends on the context (public static member constant) [edit] |
Non-member functions
Helper classes
Feature test macros
__cpp_lib_experimental_string_view |
a value of at least 201411 indicates that basic_string_view template is supported (macro constant) |