From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on starla X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 Received: from nue.mailmanlists.eu (nue.mailmanlists.eu [94.130.110.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id 5C76E1F5D2 for ; Tue, 1 Oct 2024 18:20:44 +0000 (UTC) Authentication-Results: dcvr.yhbt.net; dkim=pass (1024-bit key; unprotected) header.d=ml.ruby-lang.org header.i=@ml.ruby-lang.org header.a=rsa-sha256 header.s=mail header.b=sZ5TyMTc; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ruby-lang.org header.i=@ruby-lang.org header.a=rsa-sha256 header.s=s1 header.b=KGWcZwph; dkim-atps=neutral DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ml.ruby-lang.org; s=mail; t=1727806811; bh=VIRA6IrCrTrCl1I4QEYDSVs6PCTPWMh3tq4IDMIhXyo=; h=Date:References:To:Reply-To:Subject:List-Id:List-Archive: List-Help:List-Owner:List-Post:List-Subscribe:List-Unsubscribe: From:Cc:From; b=sZ5TyMTc1TP18XpXgnaB4btA4GlJE0lbMJljTQu+DsGO+s4VYzLs3uMNQV04jdjgV o+nBE5qFeP8tyibmvwye6aqfFAnNIN2dc5bGB9bOyQmlJZdFhnoQr2Y9lhzDk6KyUs jjr2uvxXd7dx8q01W2+5XIZvicYUdHGXtlB4pLVI= Received: from nue.mailmanlists.eu (localhost [IPv6:::1]) by nue.mailmanlists.eu (Postfix) with ESMTP id 7950344079 for ; Tue, 1 Oct 2024 18:20:11 +0000 (UTC) Authentication-Results: nue.mailmanlists.eu; dkim=pass (2048-bit key; unprotected) header.d=ruby-lang.org header.i=@ruby-lang.org header.a=rsa-sha256 header.s=s1 header.b=KGWcZwph; dkim-atps=neutral Received: from s.wfbtzhsv.outbound-mail.sendgrid.net (s.wfbtzhsv.outbound-mail.sendgrid.net [159.183.224.104]) by nue.mailmanlists.eu (Postfix) with ESMTPS id 6D17D44097 for ; Tue, 1 Oct 2024 18:18:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ruby-lang.org; h=from:references:subject:mime-version:content-type: content-transfer-encoding:list-id:to:cc:content-type:from:subject:to; s=s1; bh=vkdvD3ki0BtF1eOIHlTNS9Z/rbair/F3Kpekb5S7e9E=; b=KGWcZwphdEFRwNrHlOZFiFQb8pH8dnzmD3uOItE4wGqS7GdX9mhV9wbb/UWD0t2rWKjL RFLHLoDNBdd6ag15XwGfyZ3d9bVFl40VTjvJ0eLyFEWqKBuhPftluuSpY58ToTpvyw10Qi WStnuHzIkLV/P3k3PIuJfvJrb0BX3qY3JzfdykD0NCJOZ1J1oVYkl27uap++IEQ/VgxSJW wdi7okgqeBgqUfOKKoFr0ZS7nctemI/kswpiqpiVe0fEWoQHl1py5p7/4cA1ZAvNl3gK+f SsBkbgws4hymD4qVu7aJOzx62S55Fu1PM7ldGSfyYJuQAttdPT5ijLE8NV0sdwPw== Received: by recvd-7cc7f7d978-6w7rw with SMTP id recvd-7cc7f7d978-6w7rw-1-66FC3D09-B 2024-10-01 18:18:49.382086696 +0000 UTC m=+1642946.460643825 Received: from herokuapp.com (unknown) by geopod-ismtpd-21 (SG) with ESMTP id Xi8XMOM6TpWGVjq51uThhA for ; Tue, 01 Oct 2024 18:18:49.359 +0000 (UTC) Date: Tue, 01 Oct 2024 18:18:49 +0000 (UTC) Message-ID: References: Mime-Version: 1.0 X-Redmine-Project: ruby-master X-Redmine-Issue-Tracker: Feature X-Redmine-Issue-Id: 20770 X-Redmine-Issue-Author: AlexandreMagro X-Redmine-Issue-Priority: Normal X-Redmine-Sender: Eregon X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: All Auto-Submitted: auto-generated X-Redmine-MailingListIntegration-Message-Ids: 96024 X-SG-EID: =?us-ascii?Q?u001=2EByjZWvxTCjdoV8K03xEuhE7KqN4thWULFLM7+oH78KY30oYB3qFthsDpL?= =?us-ascii?Q?4w4cbYa3ttBh8bAHPOnE=2FkzPba67JNu7Lnrked2?= =?us-ascii?Q?O7K9VQ=2FJax1xQ7hEMkUtoUvgq5ZPA1poJmY7Swh?= =?us-ascii?Q?+wP3n+Ou6IouVrvpyadAMNzwNsAEkY8OGeQj6iv?= =?us-ascii?Q?li2Z77yuOkhdtkZ8jCjIFl4RK7=2Fq6BusvKd5mTt?= =?us-ascii?Q?6Z13IodgqXDyNZ=2FgD7ZtfC8XdDJsIr0E3YmpIPj?= =?us-ascii?Q?fJymvGDYIF+dfLQocxfTtlJpqw=3D=3D?= To: ruby-core@ml.ruby-lang.org X-Entity-ID: u001.I8uzylDtAfgbeCOeLBYDww== Message-ID-Hash: 345O74PBAS77TROTXPCPBUYSOY74OKU6 X-Message-ID-Hash: 345O74PBAS77TROTXPCPBUYSOY74OKU6 X-MailFrom: bounces+313651-b711-ruby-core=ml.ruby-lang.org@em5188.ruby-lang.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list Reply-To: Ruby developers Subject: [ruby-core:119387] [Ruby master Feature#20770] A *new* pipe operator proposal List-Id: Ruby developers Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: "Eregon (Benoit Daloze) via ruby-core" Cc: "Eregon (Benoit Daloze)" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Issue #20770 has been updated by Eregon (Benoit Daloze). One concern with so many `then {}` is that's a non-trivial overhead for execution (2 method calls + 1 block call for `then { foo(it) }` vs 1 method call for `foo(var)`). So if it's added I think it should translate to the same as using local variables and not `then {}` blocks. I would write that snippet like this: ```ruby json = Net::HTTP.get(URI.parse(client_api_url)) JSON.parse(json).fetch(important_key) ``` 2 lines of code vs 4, and IMO just as readable if not better. So in my opinion there is no need for a pipeline operator for this. Also I would think in real code one would probably want to `rescue` some exceptions there, and so the pipeline wouldn't gain much visually and might need to be broken down in several parts anyway. ---------------------------------------- Feature #20770: A *new* pipe operator proposal https://bugs.ruby-lang.org/issues/20770#change-110004 * Author: AlexandreMagro (Alexandre Magro) * Status: Open ---------------------------------------- Hello, This is my first contribution here. I have seen previous discussions around introducing a pipe operator, but it seems the community didn't reach a consensus. I would like to revisit this idea with a simpler approach, more of a syntactic sugar that aligns with how other languages implement the pipe operator, but without making significant changes to Ruby's syntax. Currently, we often write code like this: ```ruby value = half(square(add(value, 3))) ``` We can achieve the same result using the `then` method: ```ruby value = value.then { add(_1, 3) }.then { square(_1) }.then { half(_1) } ``` While `then` helps with readability, we can simplify it further using the proposed pipe operator: ```ruby value = add(value, 3) |> square(_1) |> half(_1) ``` Moreover, with the upcoming `it` feature in Ruby 3.4 (#18980), the code could look even cleaner: ```ruby value = add(value, 3) |> square(it) |> half(it) ``` This proposal uses the anonymous block argument `(_1)`, and with `it`, it simplifies the code without introducing complex syntax changes. It would allow us to achieve the same results as in other languages that support pipe operators, but in a way that feels natural to Ruby, using existing constructs like `then` underneath. I believe this operator would enhance code readability and maintainability, especially in cases where multiple operations are chained together. Thank you for considering this proposal! -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- ruby-core@ml.ruby-lang.org To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/