Re: Module level variable shadowing

[Jacob Carlborg via Digitalmars-d]

On 2014-06-28 14:20, Ary Borenszweig wrote:

In Ruby the usage of a variable is always prefixed: `@foo` for instance
vars, `$foo` for global variable, `FOO` for constant. You can't make a
mistake. It's... perfect :-)

Oh, that's where you're wrong, very wrong :). Take this for example:

class Foo
  attr_accessor :bar

  def initialize
    @bar = 3
  end

  def foo
    puts bar # prints "bar", the instance variable, via a getter
    bar = 4
    puts bar # prints "bar", the local variable
    puts self.bar # prints "bar", the instance variable, via a getter
  end
end

Foo.new.foo

--
/Jacob Carlborg