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## GIF-Screencast-OSX.md

      
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                dergachev
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                OS X Screencast to animated GIF
              
          
    OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

  
## gist:3334214

      
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                r00k
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              Created
              August 12, 2012 20:27
            
              
                Composition vs Inheritance
              
          
    My favorite composition vs. inheritance metaphor:

There are only two types of relationships in an object model: composition and inheritance. Both have analogs in a family tree. A composition relation is like a marriage between objects. It is dynamic, it happens during the participating objects' lifetimes, and it can change. Objects can discard partners and get new partners to collaborate with. Inheritance relations are more like births into the family. Once it happens, it is forever. Just as both marriage and ancestry appear in the same family tree, composition and inheritance coexist in a single object model.

(from Object Design - Roles, Responsibilities and Collaborations)

  
## Ubuntu rbenv
# for more info: https://gist.github.com/1120938