String Ruby

  1. Home
  2. Ruby
  3. String
  4. Add method to system type
class String
  def substitute(binding=TOPLEVEL_BINDING)
    eval(%{"#{self}"}, binding)
  end
end
template = %q{static string #{food}!}
food = 'b'
template.substitute(binding)         
food = 'p'
template.substitute(binding)