23 lines
628 B
Factor
23 lines
628 B
Factor
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! Copyright (C) 2009 Doug Coleman.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors fry generalizations kernel macros math.order
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stack-checker math ;
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IN: combinators.smart
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MACRO: output>sequence ( quot exemplar -- newquot )
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[ dup infer out>> ] dip
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'[ @ _ _ nsequence ] ;
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: output>array ( quot -- newquot )
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{ } output>sequence ; inline
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MACRO: input<sequence ( quot -- newquot )
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[ infer in>> ] keep
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'[ _ firstn @ ] ;
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MACRO: reduce-output ( quot operation -- newquot )
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[ dup infer out>> 1 [-] ] dip n*quot compose ;
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: sum-outputs ( quot -- n )
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[ + ] reduce-output ; inline
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