Ruby class types and case statements

Question

What is the difference between

case item.class
when MyClass
  # do something here
when Array
  # do something different here
when String
  # do a third thing         


        

Answer 1

Yeah, Nakilon is correct, you must know how the threequal === operator works on the object given in the when clause. In Ruby

case item
when MyClass
...
when Array
...
when String
...

is really

if MyClass === item
...
elsif Array === item
...
elsif String === item
...

Understand that case is calling a threequal method (MyClass.===(item) for example), and that method can be defined to do whatever you want, and then you can use the case statement with precisionw