string::rfind
Find the last occurrence of a string within the string.
Synopsis
std::size_t
rfind(
string_view sv,
std::size_t pos = string::npos) const noexcept; (1)
std::size_t
rfind(
char ch,
std::size_t pos = string::npos) const noexcept; (2)Description
Returns the highest index idx less than or equal to pos where each element of sv is equal to that of {begin() + idx, begin() + idx + sv.size()) if one exists, and npos otherwise.
Complexity
Linear.
Return Value
The last occurrence of sv within the string starting before or at the index pos, or npos if none exists.
Return Value
The last occurrence of ch within the string starting before or at the index pos, or npos if none exists.
Parameters
| Name | Description |
|---|---|
|
The |
|
The index to start searching at. The default argument for this parameter is |
|
The character to search for. |