[Haskell-cafe] pipes Producer combination

[PICCA Frederic-Emmanuel]

Hello,

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.

thanks for considering.

Cheers

Frederic