[#99002] [Ruby master Feature#17004] Provide a way for methods to omit their return value — shyouhei@...

Issue #17004 has been reported by shyouhei (Shyouhei Urabe).

21 messages 2020/07/01

[#99044] [Ruby master Bug#17007] SystemStackError when using super inside Module included and lexically inside refinement — eregontp@...

Issue #17007 has been reported by Eregon (Benoit Daloze).

7 messages 2020/07/03

[#99078] [Ruby master Feature#17016] Enumerable#scan_left — finch.parker@...

Issue #17016 has been reported by parker (Parker Finch).

42 messages 2020/07/07

[#99079] [Ruby master Bug#17017] Range#max & Range#minmax incorrectly use Float end as max — bosticko@...

Issue #17017 has been reported by sambostock (Sam Bostock).

25 messages 2020/07/07

[#99097] [Ruby master Bug#17021] "arm64" and "arm" are mixed in RbConfig on Apple silicon — watson1978@...

Issue #17021 has been reported by watson1978 (Shizuo Fujita).

9 messages 2020/07/09

[#99115] [Ruby master Bug#17023] How to prevent String memory to be relocated in ruby-ffi — larskanis@...

Issue #17023 has been reported by larskanis (Lars Kanis).

22 messages 2020/07/10

[#99156] [Ruby master Bug#17030] Enumerable#grep{_v} should be optimized for Regexp — marcandre-ruby-core@...

Issue #17030 has been reported by marcandre (Marc-Andre Lafortune).

25 messages 2020/07/13

[#99257] [Ruby master Misc#17041] DevelopersMeeting20200826Japan — mame@...

Issue #17041 has been reported by mame (Yusuke Endoh).

18 messages 2020/07/22

[#99308] [Ruby master Feature#17047] Support parameters for MAIL FROM and RCPT TO — bugs.ruby-lang.org@...

Issue #17047 has been reported by c960657 (Christian Schmidt).

11 messages 2020/07/23

[#99311] [Ruby master Bug#17048] Calling initialize_copy on live modules leads to crashes — XrXr@...

Issue #17048 has been reported by alanwu (Alan Wu).

17 messages 2020/07/24

[#99351] [Ruby master Bug#17052] Ruby with LTO enabled on {aarch64, ppc64le} architectures. — v.ondruch@...

Issue #17052 has been reported by vo.x (Vit Ondruch).

35 messages 2020/07/27

[#99375] [Ruby master Feature#17055] Allow suppressing uninitialized instance variable and method redefined verbose mode warnings — merch-redmine@...

Issue #17055 has been reported by jeremyevans0 (Jeremy Evans).

29 messages 2020/07/28

[#99391] [Ruby master Feature#17059] epoll as IO.select — dsh0416@...

Issue #17059 has been reported by dsh0416 (Delton Ding).

18 messages 2020/07/29

[#99418] [Ruby master Feature#17097] `map_min`, `map_max` — sawadatsuyoshi@...

Issue #17097 has been reported by sawa (Tsuyoshi Sawada).

11 messages 2020/07/31

[ruby-core:99303] [Ruby master Feature#17043] Invokable module for custom Proc-like objects

From: marcandre-ruby-core@...
Date: 2020-07-23 18:43:00 UTC
List: ruby-core #99303
Issue #17043 has been updated by marcandre (Marc-Andre Lafortune).

Status changed from Feedback to Rejected

>  But, it'd be great to be able to treat sets as predicate functions

Note that since Ruby 2.5, `Set#===` is an alias for `include?`, so you can do `ary.grep(Set[...])` for example.

> I'm curious if an officially blessed "Invokable" module might be a useful thing for the standard library.

Most of the standard library is being made available as separate gems (or removed altogether), so we're basically trying to reduce the standard library, not extend it. Thanks for enquiring though.

----------------------------------------
Feature #17043: Invokable module for custom Proc-like objects 
https://bugs.ruby-lang.org/issues/17043#change-86691

* Author: delonnewman (Delon Newman)
* Status: Rejected
* Priority: Normal
----------------------------------------
Ruby beautifully integrates Functional and Object-Oriented Programming, and there's more moving in the direction of supporting Functional Programming. A generalization of the Proc interface would enable users to integrate functional approach into their classic OOP design patterns. One of the obvious examples would be "Command" objects.

Also, generic structures, which Ruby has great support for. Hash now has `to_proc`.  But, it'd be great to be able to treat sets as predicate functions.

I've put together a prototype that I've found useful in my own work here: https://github.com/delonnewman/invokable.

It works like Enumerable; it can be included in any class that implements a `call` method. Then you get `to_proc`, `curry`, `<<` and `>>` for right and left composition, and `memoize`. More could be added. If you include `Invokable::Command`, you can treat your "Command" object as an automatically curried function.




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