26 lines
951 B
Factor
26 lines
951 B
Factor
! Copyright (C) 2005, 2010 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors kernel math sequences sequences.private ;
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IN: arrays
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BUILTIN: array { length array-capacity read-only initial: 0 } ;
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M: array clone (clone) ; inline
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M: array length length>> ; inline
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M: array nth-unsafe [ integer>fixnum ] dip array-nth ; inline
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M: array set-nth-unsafe [ integer>fixnum ] dip set-array-nth ; inline
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M: array resize resize-array ; inline
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M: array equal? over array? [ sequence= ] [ 2drop f ] if ;
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M: object new-sequence drop 0 <array> ; inline
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M: f new-sequence drop [ f ] [ 0 <array> ] if-zero ; inline
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INSTANCE: array sequence
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: >array ( seq -- array ) { } clone-like ;
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: 1array ( x -- array ) 1 swap <array> ; inline
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: 2array ( x y -- array ) { } 2sequence ; inline
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: 3array ( x y z -- array ) { } 3sequence ; inline
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: 4array ( w x y z -- array ) { } 4sequence ; inline
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PREDICATE: pair < array length 2 number= ;
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