Re: How can we create instance method and class methods at runtime in ruby?

On Jul 22, 2013, at 11:43 PM, Love U Ruby <[e-mail]> wrote:

> How can we create instance method and class methods at runtime in ruby?
> 
> class Foo
>  def test
>    p "hi"
>  end
> end
> foo = Foo.new
> foo.test # => "hi"
> class Foo
>  def test
>    p "hiyy"
>  end
> end
> foo.test
> # >> "hi"
> # >> "hiyy"
> 
> How Can I re-define the `test` method at runtime? I tried
> `define_method`,but it didn't work for this.
> 
> -- 
> Posted via http://www.ruby-forum.com/.
> 

Don't know what you're doing, but this works:

$ irb
2.0.0p247 :001 > class Foo; def test; p "hi"; end;end
 => nil 
2.0.0p247 :002 > foo = Foo.new
 => #<Foo:0x007fdef1882f20> 
2.0.0p247 :003 > foo.test
"hi"
 => "hi" 
2.0.0p247 :004 > class Foo; def test; p "bye"; end;end
 => nil 
2.0.0p247 :005 > foo.test
"bye"
 => "bye" 
2.0.0p247 :006 > class Foo; def self.test; p "bazinga!"; end;end
 => nil 
2.0.0p247 :007 > Foo.test
"bazinga!"
 => "bazinga!" 
2.0.0p247 :008 > foo.test
"bye"
 => "bye"