Issue #20781 has been updated by furunkel (Julian Aron Prenner). * [Feature #20818] Allow passing a block to Hash#store to update current value (furunkel) * currently, to update a value in a hash we have to call `#[]` followed by `#[]=` * this calls `#hash` twice (on key), and requires two lookups; this also happens for shortcuts such as `h[k] += c` * the problem could be solved by introducing a block form for `Hash#store` (`Hash#update` is already taken) * the block is called with the current value or the default value if the key does not exist; return value = new value * inverse of `Hash#fetch`, which also can take block * `h[k] = some_method(h[k])` could be written as `h.store(k) { some_method(_1) }`, more efficient and more elegant in some cases (e.g., if `k` is complex, no repetition) * exists in other languages: e.g., `Map#computeIfAbsent|Present` (Java) or `and_modify` (Rust) * existing implementation: GH PR#11956 ---------------------------------------- Misc #20781: DevMeeting-2024-11-07 https://bugs.ruby-lang.org/issues/20781#change-110342 * Author: mame (Yusuke Endoh) * Status: Open ---------------------------------------- # The next dev meeting **Date: 2024/11/07 13:00-17:00** (JST) Log: *TBD* - Dev meeting *IS NOT* a decision-making place. All decisions should be done at the bug tracker. - Dev meeting is a place we can ask Matz, nobu, nurse and other developers directly. - Matz is a very busy person. Take this opportunity to ask him. If you can not attend, other attendees can ask instead of you (if attendees can understand your issue). - We will write a record of the discussion in the file or to each ticket in English. - All activities are best-effort (keep in mind that most of us are volunteer developers). - The date, time and place of the meeting are scheduled according to when/where we can reserve Matz's time. - *DO NOT* discuss then on this ticket, please. # Call for agenda items If you have a ticket that you want matz and committers to discuss, please post it into this ticket in the following format: ``` * [Ticket ref] Ticket title (your name) * Comment (A summary of the ticket, why you put this ticket here, what point should be discussed, etc.) ``` Example: ``` * [Feature #14609] `Kernel#p` without args shows the receiver (ko1) * I feel this feature is very useful and some people say :+1: so let discuss this feature. ``` - It is recommended to add a comment by 2024/11/04. We hold a preparatory meeting to create an agenda a few days before the dev-meeting. - The format is strict. We'll use [this script to automatically create an markdown-style agenda](https://gist.github.com/mame/b0390509ce1491b43610b9ebb665eb86). We may ignore a comment that does not follow the format. - Your comment is mandatory. We cannot read all discussion of the ticket in a limited time. We appreciate it if you could write a short summary and update from a previous discussion. -- https://bugs.ruby-lang.org/