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 KASH3 Reference Manual
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Function

Preimages ( alist A, any val ) -> any key

Optional Arguments

FailanyDetermines what to return in case of failure.

Description

Return a list of keys whose associations are `val' in the alist `A'.

Examples

A:=Alist(["foo","someval1"],["bar","someval2"]); Preimages(A,"someval1"); Preimages(A,25);
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