proc_method.txt

irb(main):001:0> class Fookamachi
irb(main):002:1>   def hackety_hack
irb(main):003:2>     proc do
irb(main):004:3*       def hello
irb(main):005:4>         'hello'
irb(main):006:4>       end
irb(main):007:3>     end
irb(main):008:2>   end
irb(main):009:1> end
=> :hackety_hack
irb(main):010:0> fooka = Fookamachi.new
=> #<Fookamachi:0x007fba6b078410>
irb(main):011:0> fooka.hackety_hack
=> #<Proc:0x007fba6b05a348@(irb):3>
irb(main):012:0> fooka.hackety_hack.hello
NoMethodError: undefined method `hello' for #<Proc:0x007fba6b04a9c0@(irb):3>
	from (irb):12
	from /Users/waseem/.rubies/ruby-2.1.2/bin/irb:11:in `<main>'
irb(main):013:0> fooka.hello
NoMethodError: undefined method `hello' for #<Fookamachi:0x007fba6b078410>
	from (irb):13
	from /Users/waseem/.rubies/ruby-2.1.2/bin/irb:11:in `<main>'
irb(main):014:0> fooka.hackety_hack.call.hello
NoMethodError: undefined method `hello' for :hello:Symbol
	from (irb):14
	from /Users/waseem/.rubies/ruby-2.1.2/bin/irb:11:in `<main>'
irb(main):015:0> fooka.hackety_hack.call
=> :hello
irb(main):016:0> o = Object.new
=> #<Object:0x007fba6c036b18>
irb(main):017:0> o.instance_eval(&fooka.hackety_hack)
=> :hello
irb(main):018:0> o.hello
=> "hello"
irb(main):019:0>