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## Function template swap

boost::xpressive::swap — Swaps the contents of two basic_regex objects.

## Synopsis

    template<typename BidiIter>
      void swap(basic_regex< BidiIter > & left, basic_regex< BidiIter > & right);

## Description

Parameters: |

`left` | The first basic_regex object.
`right` | The second basic_regex object.

Throws: | Will not throw.
Notes: | This is a shallow swap that does not do reference tracking. If you embed a basic_regex object by reference in another regular expression and then swap its contents with another basic_regex object, the change will not be visible to the enclosing regular expression. It is done this way to ensure that swap() cannot throw.

| Copyright © 2003, 2004 Eric Niebler