Scala: short form of pattern matching that returns Boolean

Question

I found myself writing something like this quite often:

a match {     
  case `b` => // do stuff
  case _ => // do nothing
}

Is there

Answer 1

Patterns can also be used in for expressions. Your code sample

a match {     
  case b => // do stuff
  case _ => // do nothing
}

can then be expressed as

for(b <- Some(a)) //do stuff

The trick is to wrap a to make it a valid enumerator. E.g. List(a) would also work, but I think Some(a) is closest to your intended meaning.