Luna::BasicString::rfind

usize rfind(const value_type *s, usize pos, usize count) const

Finds the last occurrence of the specified character sequence in the string.

Parameters

• in s

  The string that holds the character sequence to search.

• in pos

  The index at which to begin searching. The character at pos is included in searching. If pos >= size() (including npos), the search will start from the end of the string.

• in count

  The number of characters to search. Character in range [s, s + count) will be used for searching.

Return value

Returns the index of the first character of the found occurrence. The index is an offset from the start of the string, not the end. Returns npos if no such occurrence is found.

If count is 0, returns pos if pos < size(), returns size() otherwise.

npos is always returned if size() == 0, even if count is 0.