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

It depends on the nature of your item variable. If it is an instance of an object, e.g.

t = 5

then

t.class == Fixnum

but if it is a class in itself e.g

t = Array

then it will be a Class object, so

t.class == Class

EDIT: please refer to How to catch Errno::ECONNRESET class in "case when"? as stated by Nakilon since my answer could be wrong.