Re: Proposal: add Control.Monad.whenJust ∷ (Monad m) ⇒ Maybe α→(α→ m ()) → m ()

Evan Laforge qdunkan at
Wed Nov 30 17:26:59 CET 2011

On Tue, Nov 29, 2011 at 11:11 PM, Liyang HU < at> wrote:
> This particular pattern crops up a lot for me. Does it for anyone else?

Yep, I have that in my personal library, and use it fairly often.

I prefer it to Foldable.forM_ because it's explicit about the type it
takes, forM_ sounds too much like a loop.

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