From: "Stephen J. Turnbull" <stephen@xemacs.org>
To: emacs-devel@gnu.org
Subject: opaque data types
Date: Sat, 08 Jun 2013 15:11:59 +0900 [thread overview]
Message-ID: <8761xp9ln4.fsf@uwakimon.sk.tsukuba.ac.jp> (raw)
In-Reply-To: <87sj0uqdhm.fsf_-_@lifelogs.com>
Ted Zlatanov writes:
> Generally, I love how Lisp balances readability, accessibility, and
> power by limiting itself to data structures that are not opaque. The
> exceptions to that rule are the interesting edge cases :)
You mean exceptions like plists?
> (By contrast, Java
> On Fri, 07 Jun 2013 12:07:44 +0900 "Stephen J. Turnbull" <stephen@xemacs.org> wrote:
ou
> makes data structures and objects impenetrable by
> default and requires nasty tricks to get introspection.
Introspection is a question of API design. The Lisp that you love is
a trivial design. There's one data structure: the cons.
Introspection is provided by the access functions and the repl.
On the other hand, you seem to like hash tables. How do you
introspect the number of buckets and the hash function in Emacs?
Another example: XEmacs takes you half-way there. It displays the
number of buckets in the un(read)able print representation.
next prev parent reply other threads:[~2013-06-08 6:11 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-04 22:44 plist-based package.el (was Re: cl-defstruct-based package.el, now with ert tests and no external tar!) Daniel Hackney
2013-06-04 23:01 ` Dmitry Gutov
2013-06-05 14:53 ` Ted Zlatanov
2013-06-05 17:41 ` Stefan Monnier
2013-06-05 17:56 ` Drew Adams
2013-06-05 18:06 ` Ted Zlatanov
2013-06-06 9:30 ` Stephen J. Turnbull
2013-06-06 12:51 ` Ted Zlatanov
2013-06-07 3:07 ` Stephen J. Turnbull
2013-06-07 13:03 ` opaque data types (was: plist-based package.el (was Re: cl-defstruct-based package.el, now with ert tests and no external tar!)) Ted Zlatanov
2013-06-07 13:27 ` opaque data types Christopher Schmidt
2013-06-07 14:11 ` Ted Zlatanov
2013-06-07 15:44 ` Christopher Schmidt
2013-06-07 16:01 ` Ted Zlatanov
2013-06-08 9:19 ` Christopher Schmidt
2013-06-10 3:56 ` Ted Zlatanov
2013-06-07 16:17 ` Stefan Monnier
2013-06-07 17:48 ` Ted Zlatanov
2013-06-08 6:11 ` Stephen J. Turnbull [this message]
2013-06-08 6:28 ` opaque data types [revise and resend] Stephen J. Turnbull
2013-06-10 4:00 ` Ted Zlatanov
2013-06-05 1:34 ` plist-based package.el (was Re: cl-defstruct-based package.el, now with ert tests and no external tar!) Stefan Monnier
2013-06-06 1:31 ` Daniel Hackney
2013-06-08 6:47 ` Rand User
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