[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN
From: |
John Cowan |
Subject: |
Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN |
Date: |
Wed, 7 Sep 2011 21:47:07 -0400 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
Thomas Chust scripsit:
> The SRFI's syntax for record definitions is compatible with SRFI-9,
> but several extensions including convenient default names of
> procedures, single inheritance of record types and introspection
> capabilities are available, too.
Very cool! I started to write this a long time ago, but never got
around to writing the syntactic module.
Bug report: A constructor defined to take explicit arguments does
not work: instead of returning the instance, it returns a procedure
that takes N arguments and ignores them, where N is the number of slots
specified for the constructor; this procedure must then be invoked with
M arguments, where M is the number of slots in the record.
API suggestion: add redefine-record-type, which is the same as
define-record-type except that instead of a gensym'd uid it uses the
record name as the uid. That allows you to easily redefine a record
defined by Chicken's native SRFI-9 implementation so that you can define
child record types of it, while still allowing existing instances to work.
Implementation suggestion: rather than storing the uid-to-rtd mapping in
a global hash table, store it on the property list of the uid under the
the key 'srfi-99. That allows you to reload the implementation without
trashing existing mappings.
--
My corporate data's a mess! John Cowan
It's all semi-structured, no less. http://www.ccil.org/~cowan
But I'll be carefree address@hidden
Using XSLT
On an XML DBMS.
- [Chicken-users] [ANN] SRFI-99 record types for CHICKEN, Thomas Chust, 2011/09/07
- Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN,
John Cowan <=
- Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN, Felix, 2011/09/08
- Message not available
- Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN, Thomas Chust, 2011/09/08
- Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN, Alaric Snell-Pym, 2011/09/09
- Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN, Thomas Chust, 2011/09/15
- Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN, Peter Bex, 2011/09/15
- Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN, Thomas Chust, 2011/09/15
- Re: [Chicken-users] [ANN] SRFI-99 record types for CHICKEN, Peter Bex, 2011/09/15