From: Phrogz <gavin@...>
Date: 2006-11-04T13:00:06+09:00
Subject: Re: How to simplify "a.instance_of? classX or a.instance_of? classY "

Stephane Wirtel wrote:
> I would like to know if there is a way to simplify this code
>
> 	object.instance_of? WSDL::XMLSchema::ComplexContent or
>         object.instance_of? WSDL::XMLSchema::ComplexType or
>         object.instance_of? WSDL::XMLSchema::SimpleType or
[snip]

case object
  when WSDL::XMLSchema::ComplexContent, WSDL::XMLSchema::ComplexType,
WSDL::XMLSchema::SimpleType
    # your code here
end

For example:

irb(main):001:0> class Foo; end; class Bar; end; class Jimmy; end
=> nil
irb(main):002:0> o = Bar.new
=> #<Bar:0x356f74>
irb(main):003:0> case o; when Foo, Bar; p "yay"; else; p "boo"; end
"yay"
=> nil
irb(main):004:0> o = Jimmy.new
=> #<Jimmy:0x34416c>
irb(main):005:0> case o; when Foo, Bar; p "yay"; else; p "boo"; end
"boo"
=> nil