std::experimental::basic_string_view::find_first_of

 

C++

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Technical Specifications

 

Technical specifications

Filesystem library (filesystem TS)

Library fundamentals (library fundamentals TS)

Library fundamentals 2 (library fundamentals 2 TS)

Extensions for parallelism (parallelism TS)

Concepts (concepts TS)

Extensions for concurrency (concurrency TS)

 

Library fundamentals

experimental::optional

experimental::any

experimental::basic_string_view

experimental::sample

experimental::apply

experimental::search

experimental::default_searcher experimental::make_default_searcher

experimental::boyer_moore_searcher experimental::make_boyer_moore_searcher

experimental::boyer_moore_horspool_searcher experimental::make_boyer_moore_horspool_searcher

type-erased and polymorphic allocators

variable templates for type traits

 

std::experimental::basic_string_view

Member functions basic_string_view::basic_string_view basic_string_view::operator= Iterators basic_string_view::beginbasic_string_view::cbegin basic_string_view::endbasic_string_view::cend basic_string_view::rbeginbasic_string_view::crbegin basic_string_view::rendbasic_string_view::crend Element access basic_string_view::at basic_string_view::operator[] basic_string_view::front basic_string_view::back basic_string_view::data Capacity basic_string_view::sizebasic_string_view::length basic_string_view::max_size basic_string_view::empty Modifers basic_string_view::remove_prefix basic_string_view::remove_suffix basic_string_view::swap

Operations basic_string_view::to_stringbasic_string_view::operator basic_string basic_string_view::copy basic_string_view::substr basic_string_view::compare basic_string_view::find basic_string_view::rfind basic_string_view::find_first_of basic_string_view::find_last_of basic_string_view::find_first_not_of basic_string_view::find_last_not_of Constants basic_string_view::npos Non-member functions operator==operator!=operator<operator>operator<=operator>= operator<< Helper classes hash<std::string_view>hash<std::wstring_view>hash<std::u16string_view>hash<std::u32string_view>

 

constexpr size_type find_first_of(basic_string_view v, size_type pos = 0) const;	(1)	(library fundamentals TS)
constexpr size_type find_first_of(CharT c, size_type pos = 0) const;	(2)	(library fundamentals TS)
constexpr size_type find_first_of(const CharT* s, size_type pos, size_type count) const;	(3)	(library fundamentals TS)
constexpr size_type find_first_of(const CharT* s, size_type pos = 0) const;	(4)	(library fundamentals TS)

Finds the first character equal to any of the characters in the given character sequence.

1) Finds the first occurence of any of the characters of v in this view, starting at position pos.

2) Equivalent to find_first_of(basic_string_view(&c, 1), pos).

3) Equivalent to find_first_of(basic_string_view(s, count), pos).

4) Equivalent to find_first_of(basic_string_view(s), pos).

Parameters

v	-	view to search for
pos	-	position at which to start the search
count	-	length of the string of characters to search for
s	-	pointer to a string of characters to search for
ch	-	character to search for

Return value

Position of the first occurrence of any character of the substring, or npos if no such character is found.

Exceptions

1-2)

noexcept specification:  

noexcept

  

Complexity

O(size() * v.size()) at worst.

See also

find	find characters in the view (public member function)
rfind	find the last occurrence of a substring (public member function)
find_last_of	find last occurrence of characters (public member function)
find_first_not_of	find first absence of characters (public member function)
find_last_not_of	find last absence of characters (public member function)