[Haskell-beginners] Using findIndex and then splitAt in Data.List

[Geoffrey Bays]

Michael:
Thanks, split on would work nicely.

I probably should have backed up in my reasoning process to say that my
real task is to replace a data item in a list with another altered data
item in the same position, or rather in FP, create a new list with the
altered item in the same place. And I need a predicate to find the name of
the item I want to replace.
Any thoughts?

Thanks,
Geoffrey
On Feb 28, 2015 9:08 AM, "Michael Orlitzky" <michael at orlitzky.com> wrote:

> On 02/27/2015 03:51 PM, Geoffrey Bays wrote:
> > Hi.
> > An elementary question here about two functions in Data.List:
> >  how to use a value from findIndex which returns a Maybe Int,
> > and then use that result in splitAt which takes a regular Int?
>
> Once you understand why you can't feed a (Maybe Int) to a function that
> takes an Int, throw it all away and use `splitOn` from the "split"
> package instead =)
>
> https://hackage.haskell.org/package/split-0.2.2/docs/Data-List-Split.html
>
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