assocs.extras: adding assoc-harvest and assoc-sift.

2012-04-27 11:39:20 -07:00 · 2012-04-27 11:39:20 -07:00 · 3ace73ec00
parent d37e5192de
commit 3ace73ec00
1 changed files with 13 additions and 0 deletions
--- a/extra/assocs/extras/extras.factor
+++ b/extra/assocs/extras/extras.factor
@ -0,0 +1,13 @@
+! Copyright (C) 2012 John Benediktsson
+! See http://factorcode.org/license.txt for BSD license
+
+USING: assocs kernel sequences ;
+
+IN: assocs.extras
+
+: assoc-harvest ( assoc -- assoc' )
+    [ nip empty? not ] assoc-filter ; inline
+
+: assoc-sift ( assoc -- assoc' )
+    [ nip ] assoc-filter ; inline
+