Книга: Standard Template Library Programmer

iter_swap

iter_swap

Category: algorithms

Component type: function

template <class ForwardIterator1, class ForwardIterator 2>
inline void iter_swap(ForwardIterator1 a, ForwardIterator2 b);

Equivalent to swap(*a, *b). [1]

Declared in algo.h. The implementation is in algobase.h.

• ForwardIterator1 and ForwardIterator2 are models of Forward Iterator.

• ForwardIterator1 and ForwardIterator2 are mutable.

• ForwardIterator1 and ForwardIterator2 have the same value type.

• ForwardIterator1 and ForwardIterator2 are dereferenceable.

See swap for a discussion.

int x = 1;
int y = 2;
assert(x == 1 && y == 2);
iter_swap(&x, &y);
assert(x == 2 && y == 1);

[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).

swap, swap_ranges

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