How to mix Function input parameter with output

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What is the best way to mix a function input parameter with the output.

Here is my current code :

def zip[A,B](f: A => B) : A => (A, B) = (a: A) => (a, f(a))
def zip[A,B](pf: PartialFunction[A,B]) : PartialFunction[A, (A, B)] = { case a if pf.isDefinedAt(a) => (a, pf(a)) }

Is there a better way ? Is there a better naming for that ?

asked 39 secs ago

Yann Moisan

1,794

How to mix Function input parameter with output