std::basic_string_view::rfind

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constexpr size_type rfind(basic_string_view v, size_type pos = npos) const;
(1) (since C++17)
constexpr size_type rfind(CharT c, size_type pos = npos) const;
(2) (since C++17)
constexpr size_type rfind(const CharT* s, size_type pos, size_type count) const;
(3) (since C++17)
constexpr size_type rfind(const CharT* s, size_type pos = npos) const;
(4) (since C++17)

Finds the last substring equal to the given character sequence.

1) Finds the last occurence of v in this view, starting at position pos.
2) Equivalent to rfind(basic_string_view(&c, 1), pos).
3) Equivalent to rfind(basic_string_view(s, count), pos).
4) Equivalent to rfind(basic_string_view(s), pos).

Parameters

v - view to search for
pos - position at which to start the search
count - length of substring to search for
s - pointer to a character string to search for
ch - character to search for


Return value

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

Exceptions

1-2)
noexcept specification:  
noexcept
  

Complexity

O(size() * v.size()) at worst.

See also

find characters in the view
(public member function)
find first occurrence of characters
(public member function)
find last occurrence of characters
(public member function)
find first absence of characters
(public member function)
find last absence of characters
(public member function)