How do I match multiple arguments?

Question

I have a function:

def func(a: int, b: int, c: double): int 

And I want to match various possible scenarios

1. Wherever c is 0, return b-a
2. Wherever c > 9, return 0
3. Wherever a=b return 0

And so on, before doing some more complex logic if none of the above are satisfied.

Do I have to match c separately first, or can I match on a,b,c, like _,_,0?

Answer 1

You can pattern match all described cases like this:

def func(a: Int, b: Int, c: Double) = (a, b, c) match {     case (a, b, 0) => b - a     case (a, b, c) if c > 9 || a == b => 0     case _ => 1 // add your logic here } 

Answer 2

Following on from my comments to Easy Angel's answer, I still feel this

if (c == 0)    b -a else if (c > 9)    0 else if (a == b)    0 else     1 // your logic here 

is clearer. Basically because there isn't really any pattern to match here.