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Because I find this exercise ([1]) very instructive, I want to show you how the foldr fusion law can be used to derive an efficient program from a very inefficient one. This note will let you see some important points:… Continue Reading →
In this post we’ll deal only with finite lists. Questions regarding partial and infinite lists are left as an exercise for the reader. Sometimes we have to answer questions like: I have something that looks like a functional equation, but… Continue Reading →
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