Question

This common pattern feels a bit verbose:

if (condition) 
  Some(result)
else None

I was thinking of using a function to simplify:

def on[A](cond: Boolean)(f: => A) = if (cond) Some(f) else None

This reduces the top example to:

on (condition) { result }

Does something like this exist already? Or is this overkill?

Answer 1

Scalaz includes the option function:

import scalaz.syntax.std.boolean._

true.option("foo") // Some("foo")
false.option("bar") // None