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## Struct pop_back

boost::xpressive::op::pop_back — `pop_back` is a PolymorphicFunctionObject for popping an element from the back of a container.

## Synopsis

    // In header: <boost/xpressive/regex_actions.hpp>

    struct pop_back {
      // types
      typedef void result_type;

      // public member functions
      template<typename Sequence> void operator()(Sequence &) const;
    };

## Description

### `pop_back` public member functions

1.     template<typename Sequence> void operator()(Sequence & seq) const;

   Equivalent to `seq.pop_back()`.

   Parameters: |
   `seq` | The sequence from which to pop.
   Returns: | `void`