partition_copy

Copies elements for which a condition is true to one destination, and for which the condition is false to another. The elements must come from a specified range.

template<class InputIterator, class OutputIterator1, class OutputIterator2, class Predicate>
    pair<OutputIterator1, OutputIterator2>
        partition_copy(
            InputIterator _First, 
            InputIterator _Last,
            OutputIterator1 _Dest1, 
            OutputIterator2 _Dest2, 
            Predicate _Pred
        );

Parameters

• _First
  An input iterator that indicates the beginning of a range to check for a condition.

• _Last
  An input iterator that indicates the end of a range.

• _Dest1
  An output iterator used to copy elements that return true for a condition tested by using _Pred.

• _Dest2
  An output iterator used to copy elements that return false for a condition tested by using _Pred.

• _Pred
  The condition to test for. This is provided by a user-defined predicate function object that defines the condition to be tested. A predicate takes a single argument and returns true or false.

Property Value/Return Value

Returns a pair that contains two OutputIterator objects, one that contains elements that exhibit the condition, the other contains elements that do not.

Remarks

The template function copies each element X in [_First, _Last) to *_Dest1++ if _Pred(X) is true, or to *_Dest2++ if not. It returns pair<OutputIterator1, OutputIterator2>(_Dest1, _Dest2).

Requirements

Header: <algorithm>

Namespace: std

See Also

Reference

<algorithm>

Standard Template Library

Other Resources

<algorithm> Members