[Haskell-cafe] pipes Producer combination

[Ben Franksen]

On 6/13/22 14:24, Ben Franksen wrote:
> On 6/13/22 10:06, PICCA Frederic-Emmanuel wrote:
>> I would like to combine Producers in order to create a Producer of 
>> another type whcih combine these values
>>
>> I want a Producer of the 'A' type
>>
>> data A :: A a b
>>
>> by I have a Producer of  'a' values and another on of  'b' values.
>> what is the best way to create from thoses two producers  a Producer 
>> of 'A' ?
>> Is ther a Generic way to automatically generate these combine Producers.
>> In my programmes, I will have plenty of these combine Producers.
> 
> The intuitive thing I would try is to use Applicative i.e.
> 
> A <$> a_producer <*> b_producer
> 
> but I haven't tested if it works with pipes.

There is also pipes' zipWith operator:

https://hackage.haskell.org/package/pipes-4.3.16/docs/Pipes-Prelude.html#g:6

-- 
I would rather have questions that cannot be answered, than answers that
cannot be questioned.  -- Richard Feynman