Make unsubscribe idempotent.

benjchristensen · benjchristensen · commit 56d1ff69635b · 2013-11-25T17:20:04.000-08:00
diff --git a/language-adaptors/rxjava-scala/src/main/scala/rx/lang/scala/Subscription.scala b/language-adaptors/rxjava-scala/src/main/scala/rx/lang/scala/Subscription.scala
@@ -64,7 +64,7 @@ object Subscription {
       def isUnsubscribed = unsubscribed.get()
 
       val asJavaSubscription = new rx.Subscription {
-        def unsubscribe() { u; unsubscribed.set(true) }
+        def unsubscribe() { if(unsubscribed.get()) { u ; unsubscribed.set(true) }}
       }
     }
   }

Original file line number	Diff line number	Diff line change
`@@ -64,7 +64,7 @@ object Subscription {`
`64`	`64`	`def isUnsubscribed = unsubscribed.get()`
`65`	`65`
`66`	`66`	`val asJavaSubscription = new rx.Subscription {`
`67`		`- def unsubscribe() { u; unsubscribed.set(true) }`
	`67`	`+ def unsubscribe() { if(unsubscribed.get()) { u ; unsubscribed.set(true) }}`
`68`	`68`	`}`
`69`	`69`	`}`
`70`	`70`	`}`