[#103241] [Ruby master Bug#17777] 2.6.7 fails to build on macOS: implicit declaration of function 'rb_native_mutex_destroy' is invalid in C99 — eregontp@...
Issue #17777 has been reported by Eregon (Benoit Daloze).
17 messages
2021/04/05
[#103305] [Ruby master Feature#17785] Allow named parameters to be keywords — marcandre-ruby-core@...
Issue #17785 has been reported by marcandre (Marc-Andre Lafortune).
21 messages
2021/04/08
[#103342] [Ruby master Feature#17790] Have a way to clear a String without resetting its capacity — jean.boussier@...
Issue #17790 has been reported by byroot (Jean Boussier).
14 messages
2021/04/09
[#103388] [ANN] Multi-factor Authentication of bugs.ruby-lang.org — SHIBATA Hiroshi <hsbt@...>
Hello,
5 messages
2021/04/12
[#103414] Re: [ANN] Multi-factor Authentication of bugs.ruby-lang.org
— Martin J. Dürst <duerst@...>
2021/04/13
Is there a way to use this multi-factor authentication for (like me)
[#103547] List of CI sites to check — Martin J. Dürst <duerst@...>
Hello everybody,
4 messages
2021/04/22
[#103596] [Ruby master Feature#17830] Add Integer#previous and Integer#prev — rafasoaresms@...
Issue #17830 has been reported by rafasoares (Rafael Soares).
9 messages
2021/04/26
[ruby-core:103354] Re: [Ruby master Feature#17785] Allow named parameters to be keywords
From:
Austin Ziegler <halostatue@...>
Date:
2021-04-09 20:57:55 UTC
List:
ruby-core #103354
I窶冤l also say I like byroot窶冱 idea, especially as bare `\VALUE`
currently throws a SyntaxError.
On Fri, Apr 9, 2021 at 1:59 PM <eregontp@gmail.com> wrote:
>
> Issue #17785 has been updated by Eregon (Benoit Daloze).
>
>
> I like @byroot's idea to solve the more general issue and not just this specific instance.
>
> marcandre (Marc-Andre Lafortune) wrote in #note-3:
> > Clearly, `class_` is much simpler and much faster than `binding.local_variable_get(:class)`...
>
> It can be the same performance with a JIT and escape analysis (i.e., it's the same on TruffleRuby).
>
> ----------------------------------------
> Feature #17785: Allow named parameters to be keywords
> https://bugs.ruby-lang.org/issues/17785#change-91441
>
> * Author: marcandre (Marc-Andre Lafortune)
> * Status: Open
> * Priority: Normal
> * Assignee: matz (Yukihiro Matsumoto)
> ----------------------------------------
> We should allow named parameters to be keywords and use add a trailing `_` to the corresponding variable:
>
> ```ruby
> def check(arg, class:)
> arg.is_a?(class_)
> end
>
> check(42, class: Integer) # => true
> ```
>
> Currently, if we want such an API we have to use `**rest`:
>
> ```ruby
> def check(arg, **rest)
> class_ = rest.fetch(:class) { raise ArgumentError('missing keyword: :class')}
> if rest.size > 1
> unknown = rest.keys - [:class]
> raise ArgumentError("unknown keyword(s): :#{unknown.join(', :')})
> end
>
> arg.is_a?(class_)
> end
> ```
>
> This is very verbose, much less convenient, much less readable, prevents `steep` from generating the proper signature, etc.
>
> We should do the same for pattern match.
>
>
>
> --
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>
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--
Austin Ziegler 窶「 halostatue@gmail.com 窶「 austin@halostatue.ca
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