Dimitar Dimitrov cutthroat
nkallen
/ QueryTimeouts.scala
Created
January 28, 2010 07:06
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| /* This is when a refactoring really pays off. | |
| * | |
| * In order to make your code more modular, avoid hard-coding assumptions (or refactor them away). | |
| * The most fundamental, anti-modular assumption in Object-Oriented software is the concrete type of objects. | |
| * Any time you write "new MyClass" in your code (or in Ruby MyClass.new) you've hardcoded | |
| * an assumption about the concrete class of the object you're allocating. These makes it impossible, for example, | |
| * for someone to later add logging around method invocations of that object, or timeouts, or whatever. | |
| * | |
| * In a very dynamic language like Ruby, open classes and method aliasing mitigate this problem, but | |
| * they don't solve it. If you manipulate a class to add logging, all instances of that class will have |