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std::sub_match< _BiIter >(3cxx) std::sub_match< _BiIter >(3cxx)

NAME

std::sub_match< _BiIter >

SYNOPSIS

#include <regex>

Public Types


typedef __iter_traits::difference_type difference_type
typedef _BiIter iterator
typedef basic_string< value_type > string_type
typedef __iter_traits::value_type value_type

Public Member Functions


int compare (const sub_match &__s) const
Compares this and another matched sequence. difference_type length () const noexcept
Gets the length of the matching sequence. operator string_type () const
Gets the matching sequence as a string. string_type str () const
Gets the matching sequence as a string. void swap (sub_match &__s) noexcept(__is_nothrow_swappable< _BiIter >::value)
Swap the values of two sub_match objects.



int compare (const string_type &__s) const
Compares this sub_match to a string. int compare (const value_type *__s) const
Compares this sub_match to a string.

Public Attributes


iterator first
bool matched
iterator second

(Note that these are not member symbols.)



template<typename _BiIter > bool operator== (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the equivalence of two regular expression submatches. template<typename _BiIter > bool operator!= (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the inequivalence of two regular expression submatches. template<typename _BiIter > bool operator< (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the ordering of two regular expression submatches. template<typename _BiIter > bool operator<= (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the ordering of two regular expression submatches. template<typename _BiIter > bool operator>= (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the ordering of two regular expression submatches. template<typename _BiIter > bool operator> (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the ordering of two regular expression submatches. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator== (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the equivalence of a string and a regular expression submatch. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator!= (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the inequivalence of a string and a regular expression submatch. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator< (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a string and a regular expression submatch. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator> (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a string and a regular expression submatch. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator>= (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a string and a regular expression submatch. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator<= (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a string and a regular expression submatch. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator== (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the equivalence of a regular expression submatch and a string. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator!= (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the inequivalence of a regular expression submatch and a string. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator< (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the ordering of a regular expression submatch and a string. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator> (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the ordering of a regular expression submatch and a string. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator>= (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the ordering of a regular expression submatch and a string. template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator<= (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the ordering of a regular expression submatch and a string. template<typename _Bi_iter > bool operator== (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the equivalence of a C string and a regular expression submatch. template<typename _Bi_iter > bool operator!= (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the inequivalence of a C string and a regular expression submatch. template<typename _Bi_iter > bool operator< (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a C string and a regular expression submatch. template<typename _Bi_iter > bool operator> (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a C string and a regular expression submatch. template<typename _Bi_iter > bool operator>= (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a C string and a regular expression submatch. template<typename _Bi_iter > bool operator<= (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a C string and a regular expression submatch. template<typename _Bi_iter > bool operator== (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the equivalence of a regular expression submatch and a C string. template<typename _Bi_iter > bool operator!= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the inequivalence of a regular expression submatch and a string. template<typename _Bi_iter > bool operator< (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the ordering of a regular expression submatch and a C string. template<typename _Bi_iter > bool operator> (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the ordering of a regular expression submatch and a C string. template<typename _Bi_iter > bool operator>= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the ordering of a regular expression submatch and a C string. template<typename _Bi_iter > bool operator<= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the ordering of a regular expression submatch and a C string. template<typename _Bi_iter > bool operator== (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the equivalence of a character and a regular expression submatch. template<typename _Bi_iter > bool operator!= (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the inequivalence of a character and a regular expression submatch. template<typename _Bi_iter > bool operator< (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a character and a regular expression submatch. template<typename _Bi_iter > bool operator> (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a character and a regular expression submatch. template<typename _Bi_iter > bool operator>= (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a character and a regular expression submatch. template<typename _Bi_iter > bool operator<= (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a character and a regular expression submatch. template<typename _Bi_iter > bool operator== (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the equivalence of a regular expression submatch and a character. template<typename _Bi_iter > bool operator!= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the inequivalence of a regular expression submatch and a character. template<typename _Bi_iter > bool operator< (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the ordering of a regular expression submatch and a character. template<typename _Bi_iter > bool operator> (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the ordering of a regular expression submatch and a character. template<typename _Bi_iter > bool operator>= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the ordering of a regular expression submatch and a character. template<typename _Bi_iter > bool operator<= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the ordering of a regular expression submatch and a character. template<typename _Ch_type , typename _Ch_traits , typename _Bi_iter > basic_ostream< _Ch_type, _Ch_traits > & operator<< (basic_ostream< _Ch_type, _Ch_traits > &__os, const sub_match< _Bi_iter > &__m)
Inserts a matched string into an output stream.

Detailed Description

template<typename _BiIter>

class std::sub_match< _BiIter >"A sequence of characters matched by a particular marked sub-expression.

An object of this class is essentially a pair of iterators marking a matched subexpression within a regular expression pattern match. Such objects can be converted to and compared with std::basic_string objects of the same character type as the pattern matched by the regular expression.

A sub_match<Iter> has a public base class of type pair<Iter, Iter>, so inherits pair's data members named first and second. The iterators that make up the pair are the usual half-open interval referencing the actual original pattern matched.

Since

C++11

Member Function Documentation

template<typename _BiIter > int std::sub_match< _BiIter >::compare (const string_type & __s) const [inline]

Compares this sub_match to a string.

Parameters

__s A string to compare to this sub_match.

Return values

negative This matched sequence will collate before __s.
zero This matched sequence is equivalent to __s.
positive This matched sequence will collate after __s.

template<typename _BiIter > int std::sub_match< _BiIter >::compare (const sub_match< _BiIter > & __s) const [inline]

Compares this and another matched sequence.

Parameters

__s Another matched sequence to compare to this one.

Return values

negative This matched sequence will collate before __s.
zero This matched sequence is equivalent to __s.
positive This matched sequence will collate after __s.

template<typename _BiIter > int std::sub_match< _BiIter >::compare (const value_type * __s) const [inline]

Compares this sub_match to a string.

Parameters

__s A string to compare to this sub_match.

Return values

negative This matched sequence will collate before __s.
zero This matched sequence is equivalent to __s.
positive This matched sequence will collate after __s.

template<typename _BiIter > difference_type std::sub_match< _BiIter >::length () const [inline], [noexcept]

Gets the length of the matching sequence.

References std::distance().

template<typename _BiIter > std::sub_match< _BiIter >::operator string_type () const [inline]

Gets the matching sequence as a string.

Returns

the matching sequence as a string.

This is the implicit conversion operator. It is identical to the str() member function except that it will want to pop up in unexpected places and cause a great deal of confusion and cursing from the unwary.

References std::sub_match< _BiIter >::str().

template<typename _BiIter > string_type std::sub_match< _BiIter >::str () const [inline]

Gets the matching sequence as a string.

Returns

the matching sequence as a string.

Referenced by std::sub_match< _BiIter >::operator string_type().

template<typename _BiIter > void std::sub_match< _BiIter >::swap (sub_match< _BiIter > & __s) [inline], [noexcept]

Swap the values of two sub_match objects.

References std::swap(), and std::pair< _T1, _T2 >::swap().

Author

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