size_type find_last_of( const basic_string& str, size_type pos = npos ) const; | (1) | |
size_type find_last_of( const CharT* s, size_type pos, size_type count ) const; | (2) | |
size_type find_last_of( const CharT* s, size_type pos = npos ) const; | (3) | |
size_type find_last_of( CharT ch, size_type pos = npos ) const; | (4) |
Finds the last character equal to one of characters in the given character sequence. Exact search algorithm is not specified. The search considers only the interval [0; pos]. If the character is not present in the interval, npos will be returned.
1) Finds the last character equal to one of characters in
str. 2) Finds the last character equal to one of characters in the first
count characters of the character string pointed to by s. s can include null characters. 3) Finds the last character equal to one of characters in character string pointed to by
s. The length of the string is determined by the first null character. 4) Finds the last character equal to
ch.Parameters
| str | - | string identifying characters to search for |
| pos | - | position at which the search is to finish |
| count | - | length of character string identifying characters to search for |
| s | - | pointer to a character string identifying characters to search fo |
| ch | - | character to search for |
Return value
Position of the found character or npos if no such character is found.
Exceptions
| 1-4) (none) | (until C++11) |
| 1,4) noexcept specification: noexcept 2,3) (none) | (since C++11) (until C++14) |
| 1) noexcept specification: noexcept 2,3,4) (none) | (since C++14) |
Example
#include<string>
#include<iostream>
int main()
{
const std::string path="/root/config";
auto const pos=path.find_last_of('/');
const auto leaf=path.substr(pos+1);
std::cout << leaf << '\n';
}Output:
config
See also
| find characters in the string (public member function) | |
| find the last occurrence of a substring (public member function) | |
| find first occurrence of characters (public member function) | |
| find first absence of characters (public member function) | |
| find last absence of characters (public member function) |
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