Ruby switch statement

Question

How do you write a switch statement in Ruby?

Answer 1

it is done by case in Ruby. Also see this one.

Answer 2

Ruby uses the case statement instead.

case a
when 1..5
  puts "It's between 1 and 5"
when 6
  puts "It's 6"
when String
  puts "You passed a string"
else
  puts "You gave me #{a} -- I have no idea what to do with that."
end

The comparison is done by comparing the object in the when-clause with the object in the case-clause using the === operator. That is, it does 1..5 === a and String === a, not a === 1.5. This allows for the sophisticated semantics you see above, where you can use ranges and classes and all sorts of things rather than just testing for equality.