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-rw-r--r--modules/set/src/main/clojure/clojure/contrib/set.clj52
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+;; Copyright (c) Jason Wolfe. All rights reserved. The use and
+;; distribution terms for this software are covered by the Eclipse Public
+;; License 1.0 (http://opensource.org/licenses/eclipse-1.0.php) which can
+;; be found in the file epl-v10.html at the root of this distribution. By
+;; using this software in any fashion, you are agreeing to be bound by the
+;; terms of this license. You must not remove this notice, or any other,
+;; from this software.
+;;
+;; set.clj
+;;
+;; Clojure functions for operating on sets (supplemental to clojure.set)
+;;
+;; jason at w01fe dot com
+;; Created 2 Feb 2009
+
+;; Deprecations in 1.2: subset and superset have been promoted to
+;; clojure.set
+
+(ns
+ ^{:author "Jason Wolfe",
+ :doc "Clojure functions for operating on sets (supplemental to clojure.set)"}
+ clojure.contrib.set)
+
+(defn subset?
+ "Is set1 a subset of set2?"
+ {:deprecated "1.2"}
+ [set1 set2]
+ {:tag Boolean}
+ (and (<= (count set1) (count set2))
+ (every? set2 set1)))
+
+(defn superset?
+ "Is set1 a superset of set2?"
+ {:deprecated "1.2"}
+ [set1 set2]
+ {:tag Boolean}
+ (and (>= (count set1) (count set2))
+ (every? set1 set2)))
+
+(defn proper-subset?
+ "Is s1 a proper subset of s2?"
+ [set1 set2]
+ {:tag Boolean}
+ (and (< (count set1) (count set2))
+ (every? set2 set1)))
+
+(defn proper-superset?
+ "Is s1 a proper superset of s2?"
+ [set1 set2]
+ {:tag Boolean}
+ (and (> (count set1) (count set2))
+ (every? set1 set2)))