28 lines
586 B
Forth
28 lines
586 B
Forth
# s:dedup
|
|
|
|
String deduplication for RetroForth.
|
|
|
|
(c) Arland Childers
|
|
|
|
~~~
|
|
'init s:keep fll:create 's:dedup.data var-n
|
|
|
|
{{
|
|
't1 var
|
|
't2 var
|
|
---reveal---
|
|
:s:dedup.register (s-)
|
|
s:keep @s:dedup.data swap &fll:append/value sip ;
|
|
:s:dedup.defined? (s-f)
|
|
!t1 #0 !t2
|
|
@s:dedup.data [ @t1 s:eq? @t2 or !t2 ] fll:for-each @t2 ;
|
|
:s:dedup.find (s-s)
|
|
!t1 #0 !t2
|
|
@s:dedup.data [ dup @t1 s:eq? [ !t2 ] &drop choose ]
|
|
fll:for-each @t2 ;
|
|
:s:dedup (s-s)
|
|
dup s:dedup.defined? &s:dedup.find &s:dedup.register
|
|
choose ;
|
|
:s:unique? (s-f) s:dedup.defined? ;
|
|
}}
|
|
~~~
|