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swap                                                             (Lib)
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swap : 'a * 'b -> 'b * 'a

SYNOPSIS
Swaps the two components of a pair.

DESCRIBE
{swap (x,y)} returns {(y,x)}.

FAILURE
Never fails.

SEEALSO
Lib.fst, Lib.snd, Lib.pair, Lib.rpair.

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