Re: [Haskell-cafe] Mapping a list of functions

I love that. It's great. Definitely going in my .ghci file. On 20 June 2010 12:28, Liam O'Connor wrote:

swing map :: forall a b. [a -> b] -> a -> [b] swing any :: forall a. [a -> Bool] -> a -> Bool swing foldr :: forall a b. b -> a -> [a -> b -> b] -> b swing zipWith :: forall a b c. [a -> b -> c] -> a -> [b] -> [c] swing find :: forall a. [a -> Bool] -> a -> Maybe (a -> Bool)   -- applies each of the predicates to the given value, returning the first predicate which succeeds, if any swing partition :: forall a. [a -> Bool] -> a -> ([a -> Bool], [a -> Bool])

Essentially, the main use case seems to be transforming HOFs that operate on a list of values and a single function into HOFs that operate on a list of functions and a single value.

Cheers. ~Liam

On 19 June 2010 19:30, Limestraël wrote:

...

??? What does exactly swing do ?

2010/6/18 Bulat Ziganshin

...

Hello Martin,

Thursday, June 17, 2010, 11:02:31 PM, you wrote:

...

But what if I want to apply a list of functions to a single argument. I can

one more answer is "swing map":

http://www.haskell.org/haskellwiki/Pointfree#Swing

-- Best regards,  Bulat                            mailto:Bulat.Ziganshin@gmail.com

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