std::basic_string<CharT,Traits,Allocator>::find_last_of

Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [0,pos]. If none of the characters in the given character sequence is present in the range, npos will be returned.

# Declarations

size_type find_last_of( const basic_string& str,
size_type pos = npos ) const;

(noexcept since C++11) (constexpr since C++20)

size_type find_last_of( const CharT* s,
size_type pos, size_type count ) const;

(constexpr since C++20)

size_type find_last_of( const CharT* s, size_type pos = npos ) const;

(constexpr since C++20)

size_type find_last_of( CharT ch, size_type pos = npos ) const;

(noexcept since C++11) (constexpr since C++20)

template< class StringViewLike >
size_type
find_last_of( const StringViewLike& t,
size_type pos = npos ) const noexcept(/* see below */);

(since C++17) (constexpr since C++20)

# 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 for
• ch: character to search for
• t: object (convertible to std::basic_string_view) identifying characters to search for

# Return value

Position of the found character or npos if no such character is found.

# Example

#include <iostream>
#include <string>
 
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';
}

# Defect reports

# See also

• find
• rfind
• find_first_of
• find_first_not_of
• find_last_not_of
• find_last_of