From: Joe Riel <joer@san.rr.com>
To: Help GNU Emacs <help-gnu-emacs@gnu.org>
Subject: eieio defclass evaluate :initform value
Date: Wed, 4 Jan 2017 12:04:03 -0800 [thread overview]
Message-ID: <20170104120403.6e7c67e8@gauss> (raw)
According to the info page for eieio for Emacs 23, one
could do
(defclass foo-class
((bar :initform (lambda () my-var)
:type string)))
When make-instance was called, the lambda expression
for :initform would be evaluated and the expression
assigned to my-var would be used for the slot bar.
The info page for eieio Emacs 24 does not mention this
functionality and testing shows it no longer exists.
Is there nice way, in 24, to create a class with an :initform
that, upon instantiation, evaluates to the value of a variable?
--
Joe Riel
next reply other threads:[~2017-01-04 20:04 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-04 20:04 Joe Riel [this message]
2017-01-04 20:45 ` eieio defclass evaluate :initform value Eric Abrahamsen
2017-01-05 16:06 ` Joe Riel
2017-01-05 18:56 ` Eric Abrahamsen
2017-01-04 22:43 ` Stefan Monnier
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