Match

A match statement is useful for when you want to do a different action depending on the value of some expression. Here’s an example where the match statement does something different for cases 1, 2, and 3:

def num = 3
match (num)
  case { 1 -> print "One" }
  case { 2 -> print "Two" }
  case { 3 -> print "Three" }
  case { _ -> "No case for this"}

The value that you want to match goes in the parentheses after match, and for every case you want to consider, there is a case, followed by a block with the value, then ->, and the code that should be executed.

The last case is for when num doesn’t match with any of the other cases.

In the following example, try changing the value of x and seeing how the program runs differently.