53 lines
1.2 KiB
Forth
53 lines
1.2 KiB
Forth
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~~~
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:aa:make (...n-a) here [ dup comma &comma times ] dip ;
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:aa:map
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swap [ fetch-next [ [ fetch over call ] sip
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&store sip n:inc ] times
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drop-pair ] sip ;
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:as:map aa:map ;
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:aa:middle (afl-a)
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here [ dup comma [ n:inc n:add ] dip
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here swap copy ] dip dup &Free store s:temp ;
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:aa:left (an-a) #0 swap aa:middle ;
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:aa:right (an-a) over s:length over n:sub swap aa:middle ;
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:as:left aa:left ;
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:as:right aa:right ;
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:as:middle aa:middle ;
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{{
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'Count var
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:prepare #0 &Count store ;
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:reserve swap #0 comma ;
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:patch here over n:sub n:dec over store ;
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:cleanup dup s:temp swap &Free store ;
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:match? over eq? ;
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:record &Count fetch comma ;
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:iterate [ match? &record if &Count v:inc ] a:for-each ;
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---reveal---
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:aa:indices (av-a)
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prepare here [ reserve iterate drop ] dip patch cleanup ;
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}}
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:aa:index (av-n) [ aa:indices #0 a:fetch ] gc ;
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:aa:contains? (an-f)
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swap #0 swap [ swap [ over eq? ] dip or ] a:for-each nip ;
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:as:contains? aa:contains? ;
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:aa:filter (aq-)
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[ over &call dip swap &comma &drop choose ] curry
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here [ over fetch comma a:for-each ] dip
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here over n:sub n:dec over store ;
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:as:filter aa:filter ;
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:aa:first (a-n) #0 a:fetch ;
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:aa:last (a-n) dup a:length n:dec a:fetch ;
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~~~
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