35 lines
927 B
Factor
Executable File
35 lines
927 B
Factor
Executable File
! Copyright (C) 2005, 2007 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: kernel kernel.private math math.private sequences
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sequences.private ;
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IN: arrays
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M: array clone (clone) ;
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M: array length array-capacity ;
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M: array nth-unsafe >r >fixnum r> array-nth ;
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M: array set-nth-unsafe >r >fixnum r> set-array-nth ;
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M: array resize resize-array ;
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: >array ( seq -- array ) { } clone-like ;
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M: object new-sequence drop f <array> ;
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M: f new-sequence drop dup zero? [ drop f ] [ f <array> ] if ;
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M: array like drop dup array? [ >array ] unless ;
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M: array equal?
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over array? [ sequence= ] [ 2drop f ] if ;
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INSTANCE: array sequence
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: 1array ( x -- array ) 1 swap <array> ; flushable
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: 2array ( x y -- array ) { } 2sequence ; flushable
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: 3array ( x y z -- array ) { } 3sequence ; flushable
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: 4array ( w x y z -- array ) { } 4sequence ; flushable
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PREDICATE: pair < array length 2 number= ;
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