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smart-unless ( pred false -- )
Factor documentation > Factor handbook > The language > Combinators > Smart combinators
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Vocabulary
combinators.smart

Inputs and outputs
preda quotation
falsea quotation


Word description
A version of unless that takes two quotations, where the first quotation is a predicate that preserves any inputs it consumes and the second is the false branch.

Definition
USING: kernel ;

IN: combinators.smart

: smart-unless ( pred false -- ) [ [ ] ] dip smart-if ; inline