std::regex_traits<CharT>::length
From cppreference.com
< cpp | regex | regex traits
staticstd::size_t length(const char_type* p ); | ||
Calculates the length of a null-terminated character sequence, that is, the smallest i such that p[i]==0.
Standard library specializations of std::regex_traits execute std::char_traits<CharT>::length(p);.
[edit]Parameters
| p | - | pointer to the first element of the null-terminated character sequence |
[edit]Return value
The length of the null-terminated character string.
[edit]Example
Run this code
#include <iostream>#include <regex> int main(){std::cout<<std::regex_traits<char>::length("Кошка")<<'\n'<<std::regex_traits<wchar_t>::length(L"Кошка")<<'\n';}
Output:
10 5
