Joe Ganley

I make software and sometimes other things.

 

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Joel Spolsky's latest essay is on coding standards, and in particular why Hungarian notation is good. I've always liked Hungarian and similar notations, but as I read this article I found myself thinking that these classifications could be not only denoted but also enforced by making them classes instead of just variables of the same type with differently-denoted names. This requires a little finesse with simple types such as int, but it can be done. The result not only denotes the same information as Hungarian (and less cryptically) in the class names, but the compiler even enforces the relationships for you. No need to "watch" for types with mismatched notation (as in Spolsky's essay); it's part of the type system. Which is not to say that I no longer find Hungarian notation useful, but that in many situations and in many languages it should be supplemented (or in some cases replaced) by type definitions.

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