|Category: algorithms||Component type: function|
template <class ForwardIterator1, class ForwardIterator2> inline void iter_swap(ForwardIterator1 a, ForwardIterator2 b);
int x = 1; int y = 2; assert(x == 1 && y == 2); iter_swap(&x, &y); assert(x == 2 && y == 1);
 Strictly speaking, iter_swap is redundant. It exists only for technical reasons: in some circumstances, some compilers have difficulty performing the type deduction required to interpret swap(*a, *b).
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