diff options
| author | Sacha Chua <sacha@sachachua.com> | 2021-12-02 01:23:52 -0500 |
|---|---|---|
| committer | Sacha Chua <sacha@sachachua.com> | 2021-12-02 01:23:52 -0500 |
| commit | 3b6a2c161825236f442727107b02d30a4b4c0c70 (patch) | |
| tree | d604edeb2cfca73cd654abde2745a51f831a2540 /2021/talks/form.md | |
| parent | 532bc5cda6dc0f094e9adcfdadfdc7bf435779f0 (diff) | |
| download | emacsconf-wiki-3b6a2c161825236f442727107b02d30a4b4c0c70.tar.xz emacsconf-wiki-3b6a2c161825236f442727107b02d30a4b4c0c70.zip | |
IRC notes from day 2
Diffstat (limited to '2021/talks/form.md')
| -rw-r--r-- | 2021/talks/form.md | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/2021/talks/form.md b/2021/talks/form.md index 73fef6ee..093887ed 100644 --- a/2021/talks/form.md +++ b/2021/talks/form.md @@ -24,7 +24,27 @@ comes with a powerful system for object-oriented programming? Join me for a discussion of EIEIO, and learn how it can help you write more modular, flexible Emacs Lisp. - +# Discussion + +IRC nick: ieure + +- I didn't know that custom.el works with EIEIO that way, very nice +- Dang Ian. What a talk, great demos. +- Wow, that's a great talk. +- Great talk. So with that Emacs is on pair with Smalltalk development environments now +- For reference, transient.el, which we all know and love as the engine that drives the magit interface, is written via EIEIO afaik. +- I reckon I should look more into it, I've always avoided it because I was afraid it wouldn't be /quite as nice/ as CLOS or GOOPS. + - ieure: It's missing a few things (most documented in the manual: https://www.gnu.org/software/emacs/manual/html_mono/eieio.html#CLOS-compatibility), but it's solid and worth using. + - Yeah when transient.el first came out I was impressed by how naturally it worked as part of that abstraction. +- ieure: EIEIO all the things! I had to cut it, but you can use dynamic dispatch based on major-mode, like: (cl-defmethod whatever ((mode (derived-mode python-mode)))) and then (whatever major-mode). + +- Also really nice for things like 'window-system. I really like when callsites are clean and not cluttered with conditionals. +- Can eieio do regexp dispatch? + - ieure: Not currently, but it's possible to add. + - okay, so I don't need to feel too bad about coding up my own vtable for those then + - ieure: This is the thing that implements (thing (eql :whatever)) specialization, should be a good starting point if you want (thing (string-match-p "^foo")): <https://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/emacs-lisp/cl-generic.el#n1164> + - thanks for the pointer, but I think I have some more pressing cl-defgeneric reimplementations to make before I touch that + - ieure: Extremely fair. One thing I didn't get to touch on is that you can extend generic functions from anywhere. So you don't have to patch up cl-generic.el, you can define a new method for a generic function defined anywhere, in any file. Which rules. # Outline |