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Re: GOOPS and hash-tables - ie. <hash-table>


From: Brent Pinkney
Subject: Re: GOOPS and hash-tables - ie. <hash-table>
Date: Sat, 23 Mar 2013 17:15:07 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130308 Thunderbird/17.0.4

On 23/03/2013 16:09, Daniel Hartwig wrote:
On 23 March 2013 19:18, Brent Pinkney <address@hidden> wrote:
Hi,

I desperately need to write a generic method that binds to a hash-table.

I have noticed that native scheme types like pair, list, and vector are
automagically recognised in GOOPS as <pair>, <list>, and <vector>.
Even SRFI-19 dates are recognised as <date>.

How did you spot those classes?

I read the guile vm and module source code :)



How then to add similar goodness so that I can write:

(define-method (enumerate! (o <hash-table>) env)
     ...
)

A quick investigation using ‘class-of’ and the various constructors:

scheme@(guile-user)> (class-of (make-hash-table))
$1 = #<<class> <hashtable> 9f96780>
scheme@(guile-user)> (use-modules (srfi srfi-69))
scheme@(guile-user)> (class-of (make-hash-table))
$2 = #<<class> <srfi-69:hash-table> a115000>

Regards
Ok, so you have confirmed that you can merrily make my enumerate! method ?

I still fail to.


Cheers

Brent



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