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##### basic_static_string::find_first_of (2 of 5 overloads)

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

###### Synopsis

    template<
        std::size_t M>
    constexpr basic_static_string::size_type
    find_first_of(
        const basic_static_string< M, CharT, Traits >& str,
        basic_static_string::size_type pos = 0) const noexcept;

###### Description

Finds the first occurrence of any of the characters within `str` within the string starting at the index `pos`.

###### Complexity

Linear.

###### Return Value

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

###### Parameters

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