27 lines
649 B
Factor
27 lines
649 B
Factor
! Copyright (C) 2012 John Benediktsson
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! See http://factorcode.org/license.txt for BSD license
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USING: arrays assocs assocs.private kernel sequences ;
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IN: assocs.extras
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: assoc-harvest ( assoc -- assoc' )
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[ nip empty? not ] assoc-filter ; inline
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: assoc-sift ( assoc -- assoc' )
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[ nip ] assoc-filter ; inline
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: deep-at ( assoc seq -- value/f )
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[ swap at ] each ; inline
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: zip-as ( keys values exemplar -- assoc )
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dup sequence? [
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[ 2array ] swap 2map-as
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] [
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[ dup length ] dip new-assoc
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[ [ set-at ] with-assoc 2each ] keep
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] if ; inline
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: substitute! ( seq assoc -- seq )
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substituter map! ;
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