Re: Q: spec on #rest and #key

To: info-dylan@ai.mit.edu
Subject: Re: Q: spec on #rest and #key
From: Rob Myers <robmyers@mac.com>
Date: Thu, 17 May 2001 10:57:57 +0100
In-Reply-To: <9e00j8$6rc2$1@sp15at20.hursley.ibm.com>
Sender: owner-info-dylan@ai.mit.edu

On Thursday, May 17, 2001, at 09:30  am, Roland Paterson-Jones wrote:

> Forgive my ignorance, but can't you detect the difference between 
> key/value
> pairs and other arguments, simply because a key/value is a pair of 
> arguments
> between ','s and the other arguments are a single syntactic element 
> between
> ','s. Can you illustrate an ambiguous case for me with an example?

I think #keys get flattened into two parameters, the symbol and the 
value.

> Would it be possible to introduce an explicit syntactic element to 
> partition
> the arguments into mandatory+rest and key arguments (where necessary)? 
> It
> just seems to me that functions using #rest would benefit from #key 
> facility
> just as much as functions without #rest.

There's #all-keys. I forget how this interacts with #rest.

- Rob.

References:

Re: Q: spec on #rest and #key

From: "Roland Paterson-Jones" <rolandpj@bigfoot.com>