[Haskell-cafe] Quick question on Lens
Daniel Trstenjak
daniel.trstenjak at gmail.com
Sun May 4 20:46:05 UTC 2014
Hi Corentin,
On Sun, May 04, 2014 at 10:34:34PM +0200, Corentin Dupont wrote:
> I have a record like this:
>
> data A = { _bs :: [B]}
>
> funcA :: State A ()
> funcA = bs ??? funcB
>
> funcB :: State B ()
> funcB = ...
You might have something like:
funcA :: State A ()
funcA = bs . traversed %= funcB
funcB :: B -> B
funcB = ...
Greetings,
Daniel
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