[#101179] Spectre Mitigations — Amel <amel.smajic@...>
Hi there!
5 messages
2020/12/01
[#101180] Re: Spectre Mitigations
— Chris Seaton <chris@...>
2020/12/01
I wouldn’t recommend using Ruby to run in-process untrusted code in the first place. Are people doing that?
[#101694] Ruby 3.0.0 Released — "NARUSE, Yui" <naruse@...>
We are pleased to announce the release of Ruby 3.0.0. From 2015 we
4 messages
2020/12/25
[ruby-core:101434] [Ruby master Feature#17355] Using same set of names in or-patterns (pattern matching with Foo(x) | Bar(x))
From:
kazuki@...
Date:
2020-12-13 03:11:06 UTC
List:
ruby-core #101434
Issue #17355 has been updated by ktsj (Kazuki Tsujimoto). Assignee set to ktsj (Kazuki Tsujimoto) Status changed from Open to Assigned I am pretty positive. I will discuss it with Matz after I finish the implementation. ---------------------------------------- Feature #17355: Using same set of names in or-patterns (pattern matching with Foo(x) | Bar(x)) https://bugs.ruby-lang.org/issues/17355#change-89202 * Author: decuplet (Nikita Shilnikov) * Status: Assigned * Priority: Normal * Assignee: ktsj (Kazuki Tsujimoto) ---------------------------------------- Given pattern matching is officially supported in Ruby 3, I have an idea about making it more flexible. Currently, this piece of code produces a syntax error ```ruby case [1, 2] in [1, a] | [a, 3] => a then a end # duplicated variable name ``` Duplications don't seem to be a problem here, semantically-wise. We just need to check if all patterns have the same set of names. It's supported in OCaml (also here's an RFC in Rust https://github.com/rust-lang/rust/issues/54883) so I think it can work in Ruby too. I've been using pattern matching in Ruby since day 1 and it worked great so far. Since I use OCaml daily too I miss this feature every once in a while :) A more practical example: imagine you have code like this ```ruby def user_email(user) case user in User(email:) then email in Admin(email:) then email in Moderator(email:) then email end end ``` Clearly, it could be simplified if or-patterns were supported: ```ruby def user_email(user) case user in User(email:) | Admin(email:) | Moderator(email:) then email end end ``` I'd like to know @ktsj's thoughts on this. -- https://bugs.ruby-lang.org/ Unsubscribe: <mailto:[email protected]?subject=unsubscribe> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>