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assocs: Add ?delete-at.

freebsd-work
Doug Coleman 2019-02-03 14:51:59 -05:00
parent 447b46db97
commit 591a468800
1 changed files with 3 additions and 0 deletions
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core/assocs/assocs.factor
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@ -131,6 +131,9 @@ M: assoc values [ nip ] { } assoc>map ;
: delete-at* ( key assoc -- old ? )
[ at* ] 2keep delete-at ;
: ?delete-at ( key assoc -- old ? )
[ ?at ] 2keep delete-at ;
: rename-at ( newkey key assoc -- )
[ delete-at* ] keep [ set-at ] with-assoc [ 2drop ] if ;