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std::basic_regex::assign

basic_regex& assign( const basic_regex& other );
 (1) (since C++11) 
basic_regex& assign( basic_regex&& that ) noexcept;
 (2) (since C++11) 
basic_regex& assign( const CharT* s, 
                     flag_type f = std::regex_constants::ECMAScript );
 (3) (since C++11) 
basic_regex& assign( const charT* ptr, size_t count,
                     flag_type f = std::regex_constants::ECMAScript );
 (4) (since C++11) 
template< class ST, class SA >
basic_regex& assign( const std::basic_string<CharT,ST,SA>& str,
                     flag_type f = std::regex_constants::ECMAScript );
 (5) (since C++11) 
template< class InputIt >
basic_regex& assign( InputIt first, InputIt last,
                     flag_type f = std::regex_constants::ECMAScript );
 (6) (since C++11) 
basic_regex& assign( std::initializer_list<CharT> ilist,
                     flag_type f = std::regex_constants::ECMAScript );
 (7) (since C++11)

Assigns the contents to the regular expression.

1) Assigns the contents of other. flags() and mark_count() are equivalent to the values of other.flags() and other.mark_count() after the call.
2) Assigns the contents of other using move semantics. flags() and mark_count() are equivalent to the values of other.flags() and other.mark_count() before the assignment. After the call, other is in a valid, but unspecified state.
3-7) Assigns a sequence of characters to the regular expression. The syntax flags are set to f. mark_count() returns the number of marked subexpressions within the resulting subexpression after the call.
3) Assigns a null-terminated string pointed to by s.
4) Assigns a sequence of count characters, pointed to by s.
5) Assigns the string str.
6) Assigns the characters in the range [first, last).
7) Assigns the characters in the initializer list ilist.

Parameters

other - another regular expression to assign
s - pointer to a character sequence to assign
str - string to assign
first, last - the range of characters to assign
ilist - initializer list containing characters to assign
Type requirements
-InputIt must meet the requirements of InputIterator.

Return value

*this.

Exceptions

1-2) (none)
3-7) std::regex_error if the supplied regular expression is not valid. The object is not modified in that case.

Example

See also

assigns the contents
(public member function)

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