X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2Futil%2FFastSet.java;fp=src%2Fedu%2Fberkeley%2Fsbp%2Futil%2FFastSet.java;h=581886ec0163f3508ad16bbc3acf3de8648291a9;hp=4e289cdb0cf931a4befece0e8141fef286e3ef72;hb=476b0f25eb4554febad2bbed314bb48a888400c5;hpb=52e7a254d32940210e0efce25e622d6266fc7f37

diff --git a/src/edu/berkeley/sbp/util/FastSet.java b/src/edu/berkeley/sbp/util/FastSet.java
index 4e289cd..581886e 100644
--- a/src/edu/berkeley/sbp/util/FastSet.java
+++ b/src/edu/berkeley/sbp/util/FastSet.java
@@ -22,6 +22,12 @@ public /*final*/ class FastSet<T> implements Iterator<T>, Iterable<T>, Visitable
         return (T)array[i];
     }
 
+    public T first() {
+        if (only != null) return only;
+        if (array != null) return (T)(array[0]);
+        return null;
+    }
+
     public FastSet() { }
     public FastSet(T t) { only = t; }
     public FastSet(Set<T> s) {