Debugging Time Machine

When Time Machine gets stuck on 'Preparing Backup' it can be difficult to debug.

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Retiring Old Content

Clearing out old content.

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Scala: Traits and Self Types

Use Self Types to let traits interact with the objects you are mixing them in to.

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Scala: Type Safe Duck Typing

If it walks like a duck and quacks like a duck, I would call it a duck.

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