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sequences.extras: adding remove-first.

db4
John Benediktsson 2013-05-02 08:23:25 -07:00
parent b78e32733e
commit fb441ca6dc
1 changed files with 6 additions and 0 deletions
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extra/sequences/extras/extras.factor
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@ -416,3 +416,9 @@ PRIVATE>
: all-shortest ( seqs -- seqs' ) dup shortest length filter-length ;
: all-longest ( seqs -- seqs' ) dup longest length filter-length ;
: remove-first ( obj seq -- seq' )
[ index ] keep over [ remove-nth ] [ nip ] if ;
: remove-first! ( obj seq -- seq )
[ index ] keep over [ remove-nth! ] [ nip ] if ;