timabdulla

def meth_with_no_args
end

args = []
# the splat expands the args array, but because the array is empty, the expansion results in no args being sent to the method, thus satisfying the method's requirement that it receive no args when being invoked.
meth_with_no_args(*args) 

kw_args = {}
# the double-splat expands the keyword-arguments hash, and even though the hash is empty and should result in no args being sent to the method, an ArgumentError is raised by the invocation of the method for sending 1 argument to it when there should be none.
meth_with_no_args(**kw_args)

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require 'thread'

mutex = Mutex.new

t1 = Thread.new do 
  mutex.synchronize do
    mutex.sleep
    # we've now been woken up, and we'll try and reacquire the mutex
    puts "woken up - mutex locked: #{mutex.locked?}"
  end

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class Foo
  def bar
    puts "baz"
  end
end

proxied = Foo.new

proxy = Object.new  
proxy.instance_eval do 

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require 'rspec'
require 'savon'
require 'savon_spec'

RSpec.configure do |config|
  config.include Savon::Spec::Macros
end

describe do
  before(:each) do

timabdulla

def notify_done(f)
  f_prime = ->(*args) do 
    puts 'done!'
    f.call(*args)
  end

  f.receiver.class.send(:define_method, f.name, &f_prime)
end

def foo

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class A 
  def a
   puts 'foo'
  end

  def b
   a
  end
end

timabdulla

class A; end
class B < A; end
def eigen(c); class << c; self; end; end;
eigen(B).ancestors # => [Class, Module, Object, Kernel, BasicObject] 
eigen(B).superclass # => #<Class:A>