13. The Law of Demeter

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The Law of Demeter (also known as the Principle of Least Knowledge) shows up occasionally in code reviews and discussions of object-oriented programming practices. But what does it actually mean, and why should we use it?

• Law of Demeter
• Set the settings set
• Easy Namespacing in Swift
• AVFoundation Programming Guide: Playback
  • [[[[[playerItem tracks] objectAtIndex:0] assetTrack] asset] duration];
• The Paperboy, The Wallet, and The Law Of Demeter