string::find_first_not_of
Find the first occurrence of any of the characters not within the string.
Synopsis
std::size_t
find_first_not_of(
string_view sv,
std::size_t pos = 0) const noexcept; (1)
std::size_t
find_first_not_of(
char ch,
std::size_t pos = 0) const noexcept; (2)Description
Returns the index corrosponding to the first character of {begin() + pos, end()) that is not within sv if it exists, and npos otherwise.
Complexity
Linear.
Return Value
The first occurrence of a character that is not within sv within the string starting at the index pos, or npos if none exists.
Return Value
The first occurrence of a character that is not equal to ch, or npos if none exists.
Parameters
| Name | Description |
|---|---|
|
The characters to ignore. |
|
The index to start searching at. The default argument for this parameter is |
|
The character to ignore. |