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Alex Rivera
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in normal Scala map and flatMap are different in that flatMap will return a iterable of the data flattened out into a list. However in the Akka documentation, map and flatMap seem to do something different? http://akka.io/docs/akka/1.1/scala/futures.html It says "Normally this works quite well as it means there is very little overhead to running a quick function. If there is a possibility of the function taking a non-trivial amount of time to process it might be better to have this done concurrently, and for that we use flatMap:" val f1 = Future { "Hello" + "World" } val f2 = f1 flatMap {x => Future(x.length) } val result = f2.get() Can someone please explain what is the difference between map and flatMap here in Akka futures?
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