Re: [Rd] Curry: proposed new functional programming, er, function.

From: Yike Lu <yikelu.home_at_gmail.com>
Date: Sat, 26 May 2012 12:30:05 -0400

On 5/25/12 5:23 PM, Hadley Wickham wrote:
> On Fri, May 25, 2012 at 3:14 PM, Yike Lu<yikelu.home@gmail.com> wrote:
>> So here's the way I'm reading this:
>>
>> Original:
>> curry_call is the function body you're constructing, which is itself just a
>> one liner which calls the symbol FUN with the appropriate substitutions.
>
> Yup. With a bit more infrastructure you could probably modify it so
> that multiple curries collapsed into the equivalent single curry.
>
Yes I could see how one would do that - if the match.call detects a Curry as the first function being called, we would short circuit the usual evaluation into a different path which properly collapses all the nesting.

It's interesting how R offers these facilities to override the usual evaluation order, but if one does that too much it could easily become confusing. I was looking at Rpipe the other day (https://github.com/slycoder/Rpipe) and the way he implements it is by defining his own Eval.

Cheers,



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