ruby.rb

class A
  include ::RSpec::Matchers
	def foo
	  expect('1'.to_i).to eq 1
	end
end
puts A.new.foo #=>

=begin
  If we comment out include ::RSpec::Matchers we get an undefined error for expect.
  So ::RSpec::Matchers, somehow, contains expect
  And yet ::RSpec::Matchers.methods.include? :expect #=> false

  And there's all kinds of weirdness going on here.
  I expected this to work to not throw an error:
  
  include ::RSpec::Matchers
	expect('1'.to_i).to eq 1
	
	Instead the expect HAS to be inside an instance method of a class otherwise expect is undefined.
	Could someone explain? Hopefully when somebody explains how ::RSpec::Matchers doesn't contain 'expect' but
	provides 'expect' it will clear the latter questions up.
=end