What is the work of Yield Keyword in Scala

Question

Can anyone explain how does yield keyword works in Scala?

Answer 1

Hey,

Used with a loop, yield produces a value for each iteration. Another way to do is to use map/ flat Map and filter with nomads:

Here is an example:

scala> for(i<-1 to 4) yield i*3

The output will be:

scala.collection.immutable.IndexedSeq[Int] = Vector(3, 6, 9, 12)