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std::basic_...:basic_regex(3) C++ Standard Libarystd::basic_...:basic_regex(3)

NAME
       std::basic_regex::basic_regex - std::basic_regex::basic_regex

Synopsis
	  basic_regex();						   (1)
       (since C++11)
	  explicit basic_regex(	const CharT* s,				   (2)
       (since C++11)
	  flag_type f =	std::regex_constants::ECMAScript );
	  basic_regex( const CharT* s, std::size_t count,		   (3)
       (since C++11)
	  flag_type f =	std::regex_constants::ECMAScript );
	  basic_regex( const basic_regex& other	);			   (4)
       (since C++11)
	  basic_regex( basic_regex&& other ) noexcept;			   (5)
       (since C++11)
	  template< class ST, class SA >

	  explicit basic_regex(	const std::basic_string<CharT,ST,SA>& str, (6)
       (since C++11)

	  flag_type f =	std::regex_constants::ECMAScript );
	  template< class ForwardIt >

	  basic_regex( ForwardIt first,	ForwardIt last,			   (7)
       (since C++11)

	  flag_type f =	std::regex_constants::ECMAScript );
	  basic_regex( std::initializer_list<CharT> init,		   (8)
       (since C++11)
	  flag_type f =	std::regex_constants::ECMAScript );

	  Constructs  a	 new  regular expression from a	sequence of characters
       interpreted
	  according to the flags f.

	  1) Default constructor. Constructs an	empty regular expression which
       will match
	  nothing.
	  2) Constructs	a regex	from a null-terminated string s.
	  3) Constructs	a regex	from a sequence	of count  characters,  pointed
       to by s.
	  4) Copy constructor. Constructs a regex by copying other.
	  5)  Move  constructor. Constructs a regex with the contents of other
       using move
	  semantics.
	  6) Constructs	a regex	from a string str.
	  7) Range constructor.	Constructs the string with the contents	of the
       range [first,
	  last).
	  8) Initializer list constructor. Constructs the string with the con-
       tents of	the
	  initializer list init.

Parameters
	  s	      -	pointer	to a null-terminated string
	  count	      -	length of a character sequence used to initialize  the
       regex
	  first,  last	- range	of a character sequence	used to	initialize the
       regex
	  str	      -	a basic_string used as a source	used to	initialize the
       regex
	  other	      -	another	regex to use as	source to initialize the regex
	  init	      -	initializer list used to initialize the	regex
	  f	      -	flags used to guide the	interpretation of the  charac-
       ter sequence as a
			regular	expression

Type requirements
	  -
	  ForwardIt must meet the requirements of LegacyForwardIterator.

Exceptions
	  1) May throw implementation-defined exceptions.
	  2-3)	std::regex_error  if  the  supplied  regular expression	is not
       valid.
	  5) May throw implementation-defined exceptions.
	  6-8) std::regex_error	if the	supplied  regular  expression  is  not
       valid.

Example
	   This	section	is incomplete
	   Reason: no example

http://cppreference.com		  2022.07.31	 std::basic_...:basic_regex(3)

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