Proposal: add ifM and whenM to Control.Monad

[Edward Kmett]

I can write precisely 2 implementations of that function. They probably
don't have the semantics you want, however. ;)

-Edward


On Mon, Apr 21, 2014 at 12:56 PM, David Mazieres <
dm-list-haskell-libraries at scs.stanford.edu> wrote:

> Mario Pastorelli <pastorelli.mario at gmail.com> writes:
>
> > Only the name 'mif' respects the rules with this type. The more generic
> > version of 'ifM' is
> >
> > ifM :: Monad m => m Bool -> a -> a -> a
> >
> > and I don't think there is a name conversion for this kind of function
> > in Control.Monad.
>
> Well, if you could actually implement the above function, convention
> would likely dictate that it be called "unsafeIf".
>
> David
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