From: John Benediktsson <mrjbq7@gmail.com>
Date: Fri, 27 Apr 2012 18:39:20 +0000 (-0700)
Subject: assocs.extras: adding assoc-harvest and assoc-sift.
X-Git-Tag: 0.97~3122
X-Git-Url: https://gitweb.factorcode.org/gitweb.cgi?p=factor.git;a=commitdiff_plain;h=3ace73ec00d6175dc7b9e7e7c4268c0284fd1875

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

diff --git a/extra/assocs/extras/extras.factor b/extra/assocs/extras/extras.factor
new file mode 100644
index 0000000000..8fd267cbc8
--- /dev/null
+++ 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
+