clingwrap-example.rb

$:.unshift(File.dirname(__FILE__) << '/../lib')

require 'clingwrap'

class Widget
  def do_something
    sleep 0.12
    puts "Did something!"
  end
end

module DoSomethingPreparation
  def do_something
    puts "(prepwork for Widget#do_something)"
    super
  end
end

Widget.clingwrap(DoSomethingPreparation)

Widget.clingwrap "Time invocation" do
  def do_something
    start = Time.now
    result = super
    puts "Elapsed: %.4fs" % (Time.now - start)
    result
  end
end

widget = Widget.new
widget.do_something

puts "\nUsing super-and-extend, not just an alias hack!"
puts "---\nIt also gives anonymous wrappers pretty names when inspected:"
p (class << widget; self; end).ancestors

output.txt

(prepwork for Widget#do_something)
Did something!
Elapsed: 0.1201s

Using super-and-extend, not just an alias hack!
---
It also gives anonymous wrappers pretty names when inspected:
[(Wrapper:"Time invocation" @ simple.rb:21), DoSomethingPreparation, Widget, Object, Kernel]