On 15 Feb 2015 19:29, "Geoffrey Irving" <[email protected]> wrote:
>
> On Sun, Feb 15, 2015 at 11:06 AM, Jonathan S. Shapiro <[email protected]>
wrote:
> > Geoffrey:
> >
> > The syntax for types may need multiple arguments to the left of *any*
arrow.
> > So, for example, we might see
> >
> > x y z -> a b -> w
> >
> > Note that this is merely a syntactic variant on my original proposal,
which
> > would write this as:
> >
> > fn x y z -> fn a b -> w

In this case "fn" would appear to be a comonad? Is a comonad a better
choice than a monad?

>
> Yep, I also like that syntax.
>
> > OK. So let's now assume this notation for a second. Are we still
permitted
> > to do a curry-style application? That is, given
> >
> > def f x y = ... returning z
> >
> > is the application
> >
> >     f 1
> >
> > acceptable (assuming the first parameter type admits int)? To put this
> > another way, are we doing implicit lambda insertions to satisfy
coercions
> > here, or are we requiring explicit insertion? I think that (at least for
> > now) it should be explicit.
>
> Given the complexity of this thread, I'd also learn towards explicit:
> "f 1" would not be legal.

Yes, this seems sensible, so lambdas have to be explicit...

Keean.
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