20 lines
479 B
Factor
20 lines
479 B
Factor
! Copyright (C) 2007 Chris Double, Doug Coleman.
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! See http://factorcode.org/license.txt for BSD license.
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USING: kernel generalizations ;
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IN: shuffle
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: 2swap ( x y z t -- z t x y ) rot >r rot r> ; inline
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: nipd ( a b c -- b c ) rot drop ; inline
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: 3nip ( a b c d -- d ) 3 nnip ; inline
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: 4nip ( a b c d e -- e ) 4 nnip ; inline
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: 4dup ( a b c d -- a b c d a b c d ) 4 ndup ; inline
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: 4drop ( a b c d -- ) 3drop drop ; inline
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: tuckd ( x y z -- z x y z ) 2 ntuck ; inline
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