Re: [Haskell-cafe] Proposal: New syntax for Haskell

On Sep 10, 2013 3:25 PM, "AlanKim Zimmerman" wrote:

I think the normal motivation for cucumber syntax is that it is a way to

communicate requirements with non-technical people. +1

On Tue, Sep 10, 2013 at 11:48 AM, John Wiegley

wrote:

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> Niklas Hambüchen writes:

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Code written in cucumber syntax is concise and easy to read

concise |kənˈsīs|, adj.

giving a lot of information clearly and in a few words; brief but comprehensive.

Compare:

Scenario: Defining the function foldl Given I want do define foldl Which has the type (in brackets) a to b to a (end of brackets), to a, to list of b, to a And my arguments are called f, acc, and l When l is empty Then the result better be acc Otherwise l is x cons xs Then the result should be foldl f (in brackets) f acc x (end of brackets) xs

To:

foldl :: (a -> b -> a) -> a -> [b] -> a foldl f z [] = z foldl f z (x:xs) = foldl f (f z x) xs

How is that more concise or preferable?

-- John Wiegley FP Complete Haskell tools, training and

consulting

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http://fpcomplete.com johnw on #haskell/irc.freenode.net _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

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