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From the Basement : Live : The Dead Weather →
When we experiment, when we try things and we fail, we started to ask why and...– Jamie Hyneman
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Differences between Protocols and Categories in...
A protocol is the same thing as an interface in Java: it’s essentially a contract that says, “Any class that implements this protocol will also implement these methods.” A category, on the other hand, just binds methods to a class. For example, in Cocoa, I can create a category for NSObject that will allow me to add methods to the NSObject class (and, of course, all...