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

template<
    typename T,
    [role red error.class-detail-template.1][role red error.class-detail-template.2] = detail::enable_if_viewable_t<T, CharT, Traits>>
BOOST_STATIC_STRING_CPP14_CONSTEXPR size_type
find_first_of(
    const T& t,
    size_type pos = 0) const;
  » more...

template<
    std::size_t M>
BOOST_STATIC_STRING_CPP14_CONSTEXPR size_type
find_first_of(
    const basic_static_string< M, CharT, Traits >& str,
    size_type pos = 0) const;
  » more...

BOOST_STATIC_STRING_CPP14_CONSTEXPR size_type
find_first_of(
    const_pointer s,
    size_type pos,
    size_type n) const;
  » more...

BOOST_STATIC_STRING_CPP14_CONSTEXPR size_type
find_first_of(
    const_pointer s,
    size_type pos = 0) const;
  » more...

BOOST_STATIC_STRING_CPP14_CONSTEXPR size_type
find_first_of(
    value_type c,
    size_type pos = 0) const;
  » more...