From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 913BCC433ED for ; Sun, 9 May 2021 21:55:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6CE0C6128E for ; Sun, 9 May 2021 21:55:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229847AbhEIV4V (ORCPT ); Sun, 9 May 2021 17:56:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229662AbhEIV4U (ORCPT ); Sun, 9 May 2021 17:56:20 -0400 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C36A0C061573 for ; Sun, 9 May 2021 14:55:16 -0700 (PDT) Received: by mail-wm1-x329.google.com with SMTP id i128so8058291wma.5 for ; Sun, 09 May 2021 14:55:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=duYnzYiKOFLMd0MAgH0QvdifB+ouMcA8vokFBq+jVE4=; b=bVdhidBHuoxMQHtd9d8Ncx75dnv9kdQ6d7skhl/93DdPCT/mkUDP31csUka0TX03k9 /AAe/gMnMT/0hfUTqEcmWRT5x3CElpPcZ601Ka6PJJRMb2W3QDS2HSmmrnWDiz54pn3R n0XH1ZE4hAlmFMNO1AyM1pEZvc6IYE5a9ufM48OqCbtjeTC+NNHEk0Mnn42DsV3Fwc+8 s+OhuGQ2/KViBNkC3jk/VAzB3mCcDmBJXZDqlh9cVVbPy90U85Pv7hBbT/vqqjtk31oL hqGE5g0n8RJfb1tDzLWEHufPPYsWiwTjIOOTrB/rDU/q8rd5DskxXyaml/umkGgAzXvF cmZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=duYnzYiKOFLMd0MAgH0QvdifB+ouMcA8vokFBq+jVE4=; b=Ro0rxUrQL4NFB1bzfwEWmgJAZ2oRXW+j+IixnBTpms9gRD+bg/kE3LkzT39mPAFcsG Qw6PJp7m/NSA0JgtIYLr/rckXyBWhsYMxeG+ueVbKiw3idYipM8+1puNXCM2x6zqCAl7 PglmqO+6tjOe51Qf0xhJjCMtKe9FoS795tuFm0VmgQySq6jO+rfbReMyofWo9xCHjecE f//eSuyaFmRyHS3UIJwDKszVGB4E2wPRkGFa44Ryp48xeB5ib7OkxVFjcxMFhJN/0hZe +vjbmxSVEuFBMFikeC+ANedXpIlmd1YPA/3WS5/U9IPaie9Jo/DpMZv6bMOwYolynfAY NR4g== X-Gm-Message-State: AOAM533xoGW6BhGzub68KbODYeM0cdGJzgVpaOxVcazGt0JyMWnqGuoK 5XZ5Jv+xfkSQaRyb8B+F1L//YsUpurmsg6HxnEYGcbgb7Fc= X-Google-Smtp-Source: ABdhPJwPZ4j1cbrhMNn7d9t+gBWdWakZ2BgsZq10Kb1qg82OC4XeWfFYVgB2EiG/qo2VtmjGNZiProkJKfqu3WT8csc= X-Received: by 2002:a1c:f70b:: with SMTP id v11mr5060109wmh.186.1620597315541; Sun, 09 May 2021 14:55:15 -0700 (PDT) MIME-Version: 1.0 References: <36a390c236b2f02ee2ac16208a4fc94f@droid.cafe> In-Reply-To: <36a390c236b2f02ee2ac16208a4fc94f@droid.cafe> From: Leandro Coutinho Date: Sun, 9 May 2021 18:55:04 -0300 Message-ID: Subject: Re: [PATCH 00/13] [RFC] Rust support To: Greg Morenz Cc: rust-for-linux@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: rust-for-linux@vger.kernel.org Much better! Thank you Greg! On Sun, May 9, 2021 at 6:49 PM Greg Morenz wrote: > > > Rust `for` works fine, until the step is not a simple unsigned int, eg: > > for (int i = n / 2; i > 0; i /= 2) > > > > In Rust you do: (please let me know if there is a better way): > > let mut i = n / 2; > > while i > 0 { > > // some logic ... > > i /= 2; > > } > > For this specific example, you could do > > let mut i = n; > while { i /= 2; i > 0 } { > // some logic ... > } > > This works because { i /= 2; i > 0 } is a single "block" expression that first > divides i by two, and then "returns" (at the block level) i > 0. Note I have to > not pre-divide n by two when initializing i. > > In general rust doesn't have an equivalent construct to C style for loops though.