From: zverok.offline@... Date: 2018-01-24T09:49:41+00:00 Subject: [ruby-core:85038] [CommonRuby Feature#13581] Syntax sugar for method reference Issue #13581 has been updated by zverok (Victor Shepelev). Just to push this forward, here are all the syntaxes from this and duplicate #12125. I am taking `Math.sqrt` and `puts` as examples: * `map(&Math->sqrt)` (and just `each(&->puts)` probably?) -- Matz is explicitly against it; * `map(&Math\.sqrt)` (not sure about puts); * `map(&Math.m(:sqrt))`, `each(&m(:puts))` (just shortening, no language syntax change) * `map(&Math.:sqrt)`, `each(&.:puts)` * `map(&Math:sqrt)`, `each(&self:puts)` * `map(&Math#sqrt)`, `each(&#puts)` (it was my proposal, "just how it looks in docs", but I should reconsider: in docs it is `Math::sqrt`, in fact) * `map(&Math:::sqrt)`, `each(&:::puts)` * `map(&~>(:sqrt, Math)`), `each(&~>(:puts))` * [several](https://bugs.ruby-lang.org/issues/12125#note-4) by @Papierkorb: * `map(&Math.>sqrt)`, `each(&.>puts)` * `map(&Math)`, `each(&)` (@nobu: conflicts with existing syntax) * `map(&Math&>sqrt)`, `each(&&>puts)` (@nobu: conflicts with existing syntax) * `map(&Math|>sqrt)`, `each(&|>puts)` (too confusable with Elixir-like pipe, probably) Can please please somebody lift this question to next Developer Meeting and make an Executive Decision?.. I personally really like `.:` (called "tetris operator" in other ticket). ---------------------------------------- Feature #13581: Syntax sugar for method reference https://bugs.ruby-lang.org/issues/13581#change-69758 * Author: americodls (Americo Duarte) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- Some another programming languages (even Java, in version 8) has a cool way to refer a method as a reference. I wrote some examples here: https://gist.github.com/americodls/20981b2864d166eee8d231904303f24b I miss this thing in ruby. I would thinking if is possible some like this: ~~~ roots = [1, 4, 9].map &Math.method(:sqrt) ~~~ Could be like this: ~~~ roots = [1, 4, 9].map Math->method ~~~ What do you guys thinking about it? -- https://bugs.ruby-lang.org/ Unsubscribe: