# Snippet to append code to method

**URL:** <https://www.ruby-forum.com/t/snippet-to-append-code-to-method/192070>\
**Category:** Ruby\
**Created:** [July 23, 2010, 9:45am UTC](https://www.ruby-forum.com/t/snippet-to-append-code-to-method/192070 "2010-07-23T09:45:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tick](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/47e85d/32.png) [@tick](https://www.ruby-forum.com/u/tick)\
**Post date:** [July 23, 2010, 9:45am UTC](https://www.ruby-forum.com/t/snippet-to-append-code-to-method/192070/1 "2010-07-23T09:45:27Z")

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Hello from Germany,

I’m looking for a brief snippet that I’ve seen somewhere lately, but  
can’t remember where.

It did override Object so one could add code to an existing method -  
without just overriding it.

Anyone have a clou? I’ll keep looking, maybe I can provide more details  
later.

Thanks  
Ray

---

<div class="post-metadata">

**Author:** ![tick](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/47e85d/32.png) [@tick](https://www.ruby-forum.com/u/tick)\
**Post date:** [July 23, 2010, 11:02am UTC](https://www.ruby-forum.com/t/snippet-to-append-code-to-method/192070/2 "2010-07-23T11:02:16Z")

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2010/7/23 Ray K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> Hello from Germany,

Hi Timezonefellow,

> I’m looking for a brief snippet that I’ve seen somewhere lately, but  
> can’t remember where.
> 
> It did override Object so one could add code to an existing method -  
> without just overriding it.
> 
> Anyone have a clou? I’ll keep looking, maybe I can provide more details  
> later.

Rainer, vielleicht meinst Du so etwas?

irb(main):001:0\> class Foo  
irb(main):002:1\> def bar  
irb(main):003:2\> puts “bar”  
irb(main):004:2\> end  
irb(main):005:1\> end  
=\> nil  
irb(main):006:0\> f = Foo.new  
=\> #Foo:0x1015ce1c  
irb(main):007:0\> f.bar  
bar  
=\> nil  
irb(main):008:0\> class Foo  
irb(main):009:1\> alias \_bar bar  
irb(main):010:1\> def bar  
irb(main):011:2\> puts “new bar before”  
irb(main):012:2\> \_bar  
irb(main):013:2\> puts “new bar after”  
irb(main):014:2\> end  
irb(main):015:1\> end  
=\> nil  
irb(main):016:0\> f.bar  
new bar before  
bar  
new bar after  
=\> nil  
irb(main):017:0\>

Cheers

robert