September 2017
Beginner to intermediate
396 pages
9h 46m
English
Content preview from Haskell Cookbook
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Working with laziness and recursion
So far, we have seen a simple recursion; recursion using worker pattern. Haskell adds laziness to the mix. We can use laziness to our advantage while working with recursion.
In this recipe, we will again calculate the fibonacci number. However, this time, we will do it with infinite lists. By taking advantage of Haskell's laziness to evaluate an expression only when it is required, we can really create a linear time algorithm (O(n)) for the fibonacci number.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.