ruby-core@ruby-lang.org archive (unofficial mirror)
 help / color / Atom feed
From: eregontp@gmail.com
To: ruby-core@ruby-lang.org
Subject: [ruby-core:95782] [Ruby master Feature#16253] Shorthand "forward everything" syntax
Date: Sun, 10 Nov 2019 22:57:08 +0000 (UTC)
Message-ID: <redmine.journal-82606.20191110225708.1faf828ef7b214c0@ruby-lang.org> (raw)
In-Reply-To: <redmine.issue-16253.20191015153838@ruby-lang.org>

Issue #16253 has been updated by Eregon (Benoit Daloze).


jeremyevans0 (Jeremy Evans) wrote:
> It is true that this means the syntax only handles a subset of delegation methods.  You can always do things the longer way if you need more control:

Right, except if one wants that code to work on Ruby 2.7+.
I think `...` could be part of how to do delegation right in the future, succinctly:
https://eregon.me/blog/2019/11/10/the-delegation-challenge-of-ruby27.html

I think leading required arguments are the most most needed in delegation.

----------------------------------------
Feature #16253: Shorthand "forward everything" syntax
https://bugs.ruby-lang.org/issues/16253#change-82606

* Author: Dan0042 (Daniel DeLorme)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
What about using this:

```ruby
  def foo(*)
    @bar.foo(*)
```

to mean this:

```ruby
  def foo(*a, **o, &b)
    @bar.foo(*a, **o, &b)
```

I used `def foo(*)` because that's currently valid ruby code, but I'm fine with any syntax.

It's like the no-parentheses `super` shorthand, but for any method.

It makes it easier to write correct forwarding code. 

If rubyists must be told they have to change their forwarding code in 2.7 (due to keyword arguments), the pill might be easier to swallow if the change is a reduction rather than an increase in verbosity.

And we'd even be future-proof if an eventual FOURTH kind of parameter is introduced!!!!




-- 
https://bugs.ruby-lang.org/

      parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <redmine.issue-16253.20191015153838@ruby-lang.org>
2019-10-15 15:38 ` [ruby-core:95338] " daniel
2019-10-15 15:53 ` [ruby-core:95340] " eregontp
2019-10-15 17:20 ` [ruby-core:95342] " shevegen
2019-10-16 10:33 ` [ruby-core:95364] " eregontp
2019-10-16 13:05 ` [ruby-core:95366] " daniel
2019-10-16 13:17 ` [ruby-core:95367] " zverok.offline
2019-10-16 16:55 ` [ruby-core:95370] " merch-redmine
2019-10-16 17:32 ` [ruby-core:95371] " daniel
2019-10-18 23:17 ` [ruby-core:95426] " samuel
2019-10-18 23:33 ` [ruby-core:95427] " merch-redmine
2019-10-19  2:56 ` [ruby-core:95428] " samuel
2019-10-20 11:56 ` [ruby-core:95437] " nobu
2019-10-20 12:07 ` [ruby-core:95439] " nobu
2019-10-22 19:37 ` [ruby-core:95478] " keystonelemur
2019-11-10 10:27 ` [ruby-core:95773] " eregontp
2019-11-10 10:39 ` [ruby-core:95774] " mame
2019-11-10 21:23 ` [ruby-core:95778] " eregontp
2019-11-10 21:41 ` [ruby-core:95779] " merch-redmine
2019-11-10 22:57 ` eregontp [this message]

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-list from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://www.ruby-lang.org/en/community/mailing-lists/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=redmine.journal-82606.20191110225708.1faf828ef7b214c0@ruby-lang.org \
    --to=ruby-core@ruby-lang.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

ruby-core@ruby-lang.org archive (unofficial mirror)

Archives are clonable: git clone --mirror https://public-inbox.org/ruby-core

Example config snippet for mirrors

Newsgroups are available over NNTP:
	nntp://news.public-inbox.org/inbox.comp.lang.ruby.core
	nntp://ou63pmih66umazou.onion/inbox.comp.lang.ruby.core
	nntp://news.gmane.org/gmane.comp.lang.ruby.core

 note: .onion URLs require Tor: https://www.torproject.org/

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git