What's the difference between using and no using a “=” in Scala defs ?

Question

What the difference between the two defs below

def someFun(x:String) { x.length } 

AND

def someFun(x:String) = {          


        

Answer 1

As per Scala-2.10, using equals sign is preferred. Infact you must use equals sign in call declarations except the definitions returning Unit.

As such there is no difference but the first one is not recommended anymore and it should not be used.