Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the master branch, built from commit 064f557086.

string::find_first_of

Find the first occurrence of any of the characters within the string.

Synopsis

std::size_t
find_first_of(
    string_view sv,
    std::size_t pos = 0) const;

Description

Returns the index corrosponding to the first occurrence of any of the characters of sv within {begin() + pos, end()) if it exists, and npos otherwise.

Complexity

Linear.

Return Value

The first occurrence of any of the characters within sv within the string starting at the index pos, or npos if none exists.

Parameters

Name	Description
`sv`	The characters to search for.
`pos`	The index to start searching at. The default argument for this parameter is `0`.