[Haskell-cafe] pipes Producer combination

Ben Franksen ben.franksen at online.de
Mon Jun 13 12:24:04 UTC 2022

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.

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

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