<string> typedefs
The latest version of this topic can be found at <string> typedefs.
| string | u16string | u32string |
| wstring |
string
A type that describes a specialization of the template class basic_string with elements of type char.
Other typedefs that specialize basic_string include wstring, u16string, and u32string.
typedef basic_string<char, char_traits<char>, allocator<char>> string;
Remarks
The following are equivalent declarations:
string str("");
basic_string<char> str("");
For a list of string constructors, see basic_string::basic_string.
u16string
A type that describes a specialization of the template class basic_string with elements of type char16_t.
Other typedefs that specialize basic_string include wstring, string, and u32string.
typedef basic_string<char16_t, char_traits<char16_t>, allocator<char16_t>> u16string;
Remarks
For a list of string constructors, see basic_string::basic_string.
u32string
A type that describes a specialization of the template class basic_string with elements of type char32_t.
Other typedefs that specialize basic_string include string, u16string, and wstring.
typedef basic_string<char32_t, char_traits<char32_t>, allocator<char32_t>> u32string;
Remarks
For a list of string constructors, see basic_string::basic_string.
wstring
A type that describes a specialization of the template class basic_string with elements of type wchar_t.
Other typedefs that specialize basic_string include string, u16string, and u32string.
typedef basic_string<wchar_t, char_traits<wchar_t>, allocator<wchar_t>> wstring;
Remarks
The following are equivalent declarations:
wstring wstr(L"");
basic_string<wchar_t> wstr(L"");
For a list of string constructors, see basic_string::basic_string.
Note
The size of wchar_t is implementation-defined. If your code depends on wchar_t to be a certain size, check your platform's implementation (for example, with sizeof(wchar_t)). If you need a string character type with a width that is guaranteed to remain the same on all platforms, use string, u16string, or u32string.