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swap_ranges (3)
  • >> swap_ranges (3) ( Solaris man: Библиотечные вызовы )
  • 
                           Standard C++ Library
                 Copyright 1998, Rogue Wave Software, Inc.
    
    
    NAME
         swap_ranges
    
          - Exchanges a range of values in one location with those in
         another.
    
    
    
    SYNOPSIS
         #include <algorithm>
         template <class ForwardIterator1, class ForwardIterator2>
          ForwardIterator2
             swap_ranges (ForwardIterator1 first1,
                         ForwardIterator1 last1,
                         ForwardIterator2 first2);
    
    
    
    DESCRIPTION
         The swap_ranges algorithm exchanges corresponding values  in
         two ranges, in the following manner:
    
         For each non-negative integer n < (last - first), the  func-
         tion exchanges *(first1 + n) with *(first2 + n)). After com-
         pleting all exchanges, swap_ranges returns an iterator  that
         points  to  the end of the second container (in other words,
         first2 + (last1 -first1)).  The  result  of  swap_ranges  is
         undefined  if  the  two  ranges  [first,  last) and [first2,
         first2 + (last1 - first1)) overlap.
    
    
    
    EXAMPLE
         //
         // swap.cpp
         //
         #include <vector>
         #include <algorithm>
         #include <iostream>
         using namespace std;
    
         int main()
         {
         int d1[] = {6, 7, 8, 9, 10, 1, 2, 3, 4, 5};
         // Set up a vector
         vector<int> v(d1+0,d1 + 10);
    
         // Output original vector
         cout << "For the vector: ";
         copy(v.begin(),v.end(),
             ostream_iterator<int,char>(cout," "));
    
         // Swap the first five elements with the last five elements
         swap_ranges(v.begin(),v.begin()+5, v.begin()+5);
         // Output result
         cout << endl << endl
         << "Swapping the first five elements "
         << "with the last five gives: "
         << endl << "     ";
         copy(v.begin(),v.end(),
             ostream_iterator<int,char>(cout," "));
         return 0;
         }
    
         Program Output
    
    
    
         For the vector: 6 7 8 9 10 1 2 3 4 5
         Swapping the first five elements with the last five gives:
         1 2 3 4 5 6 7 8 9 10
         Swapping the first and last elements gives:
         10 2 3 4 5 6 7 8 9 1
    
    
    
    WARNINGS
         If your compiler does not support default  template  parame-
         ters, you always need to supply the Allocator template argu-
         ment. For instance, you need to write:
    
         vector<int, allocator<int> >
    
         instead of:
    
         vector<int>
    
         If your compiler does not support namespaces,  then  you  do
         not need the using declaration for std.
    
    
    
    SEE ALSO
         iter_swap, swap
    
    
    
    


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