[racket-dev] Oversight in type for path-string?

From: John Clements (clements at brinckerhoff.org)
Date: Wed Mar 21 20:13:42 EDT 2012

On Mar 21, 2012, at 3:20 PM, Sam Tobin-Hochstadt wrote:

> On Wed, Mar 21, 2012 at 5:36 PM, John Clements
> <clements at brinckerhoff.org> wrote:
>> It looks like 'path-string?' is not labeled as a discriminator type.
>>> path-string?
>> - : (Any -> Boolean)
>> #<procedure:path-string?>
>> Is this just an oversight?
> Yes, that's just an oversight, although it's slightly more complicated
> than you'd think (because `(path-string? (string #\null))' is #f).

Well, I just made do with (define-predicate ps? Path-String?), so this certainly isn't a major problem.


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