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Tag Archives: Types

Functors aren’t as hard as they sound

Suppose we have a functor. Let’s call it “My Functor”, because that’s a nice friendly name. I’ll call it for short. Now, a functor is—according to higher sources—something which takes any type to a type . Let’s see how we can accomplish that with our functor, using Haskell code: data MyFunctor a = Construct a [...]

Posted 17 July 2007 † Porges § Uncategorized ‡ Comments (0) ° Also tagged: , ,

NullPointerException

Why is this such an insidious error in Java? (An opinion piece!) A Comparison Firstly, I’ll show a short comparison between some Java code and some code from a language that doesn’t have NullPointerExceptions, but does have something that allows you to accomplish anything you might want to do with null pointers. This Java code: [...]

Posted 25 May 2007 † Porges § Uncategorized ‡ Comments (0) ° Also tagged: , , , , , , ,