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refactored Topology to make it a value (immutable) class
[sbp.git]
/
src
/
edu
/
berkeley
/
sbp
/
Union.java
diff --git
a/src/edu/berkeley/sbp/Union.java
b/src/edu/berkeley/sbp/Union.java
index
b000f95
..
8780d9e
100644
(file)
--- a/
src/edu/berkeley/sbp/Union.java
+++ b/
src/edu/berkeley/sbp/Union.java
@@
-21,8
+21,8
@@
public class Union extends Element implements Iterable<Sequence> {
Topology ret = null;
for(Sequence s : this) {
Topology a = s.toAtom();
Topology ret = null;
for(Sequence s : this) {
Topology a = s.toAtom();
- if (ret==null) ret = a.dup();
- else ret = ret.union(a.dup());
+ if (ret==null) ret = a;
+ else ret = ret.union(a);
}
if (ret==null) throw new RuntimeException("confusion on " + this);
return ret;
}
if (ret==null) throw new RuntimeException("confusion on " + this);
return ret;