[Haskell-cafe] First time haskell - parse error!
colinpauladams at googlemail.com
Wed Mar 10 06:32:04 EST 2010
On 10 March 2010 11:21, Ketil Malde <ketil at malde.org> wrote:
> [Cited from "Learn You a Haskell for Great Good"]
>>> oddSquareSum :: Integer
>>> oddSquareSum = sum . takeWhile (<10000) . filter odd . map (^2) $ [1..]
> To me, the first one is very clear, and exposes the function as what it
> is: a neat, linear pipeline of standard function applications. You
> don't have to be a very seasoned programmer to quickly identify this
> structure, or the components involved.
> Named values are just like comments, which IMO also should be kept to a
> bare minimum. A bit tongue in cheek: If you need a name to understand
> what a function does, or a comment to understand how it does it, then
> your code is too complicated.
Tongue-in-cheek? It's completely ridiculous.
That example above has six names in it. Try recursively replacing all
the names in it with their definitions, until the only names left are
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