[Haskell-cafe] Proposal: New syntax for Haskell
alan.zimm at gmail.com
Tue Sep 10 11:54:32 CEST 2013
I think the normal motivation for cucumber syntax is that it is a way to
communicate requirements with non-technical people.
On Tue, Sep 10, 2013 at 11:48 AM, John Wiegley <johnw at fpcomplete.com> wrote:
> >>>>> Niklas Hambüchen <mail at nh2.me> writes:
> > 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
> 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
> 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
> http://fpcomplete.com johnw on #haskell/irc.freenode.net
> Haskell-Cafe mailing list
> Haskell-Cafe at haskell.org
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