From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp12.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms5.migadu.com with LMTPS id DFVnHiMx92L2YQAAbAwnHQ (envelope-from ) for ; Sat, 13 Aug 2022 07:05:39 +0200 Received: from aspmx1.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp12.migadu.com with LMTPS id GHLfHSMx92JM2wAAauVa8A (envelope-from ) for ; Sat, 13 Aug 2022 07:05:39 +0200 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id 390A725F2A for ; Sat, 13 Aug 2022 07:05:39 +0200 (CEST) Received: from localhost ([::1]:55882 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oMjL8-0000Yw-5l for larch@yhetil.org; Sat, 13 Aug 2022 01:05:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34160) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oMjKi-0000Yo-Tz for help-guix@gnu.org; Sat, 13 Aug 2022 01:05:12 -0400 Received: from mail-qt1-x82f.google.com ([2607:f8b0:4864:20::82f]:37882) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oMjKg-0000Iw-5y for help-guix@gnu.org; Sat, 13 Aug 2022 01:05:12 -0400 Received: by mail-qt1-x82f.google.com with SMTP id l5so2202095qtv.4 for ; Fri, 12 Aug 2022 22:05:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:user-agent:message-id:in-reply-to:date:references :subject:cc:to:from:from:to:cc; bh=e0NDfaJiHPIkC45uzHwzaBkt+Ut4FeDVGR72VCmxZMs=; b=ShDSwZFaEQTl6ndFQKGL6cbs1NyJAq9HRpiKQmlgMwAUD8OLM+/YKYkY79KUcG9uzA wq14sd9YmUjnM3fVF/XIi7R+pxEc5ZNe/FjwlsvtrIShDlxzvBh95VzbA+sabRbPqdli 8Rpf0Puc/+W+730trWvJXIri9fKrAI7N/iuSdOw3kjw6fPovWvJm0GqK36las7UVPUEl H0dzmW5ph4tqfEDLvFlXmhHEsbRX/cxRBRxIVfLM4erntTBUR3kxP18x1zjzt1sG6c88 h8fLyZyLLY/06xC4e4mwFDoZYNXt/I2CaZAF4PtGSZ08GCld09b4cQjQxfyyqJ2ljLwL YAQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:user-agent:message-id:in-reply-to:date:references :subject:cc:to:from:x-gm-message-state:from:to:cc; bh=e0NDfaJiHPIkC45uzHwzaBkt+Ut4FeDVGR72VCmxZMs=; b=nHSW/r6h/e+2yG+loNMdI0MpFBcO4y3+0ynFuUqbE6J1A8JcjUib5D+Bt1af0w3z/D +2nTeNUxMawDn2ts9ktRaIWwnlbPxQq0CCUhh4SmhLJdPDKwVnxXDbD6w5qxqagZvsIY unVue+2DnreW3AIzbenDF0nZlpU1YGuXZWXa70dBXxIg6245RIhYORSBpH2PV/7Qt9C9 PxZAHzs8PdpzsdcbKCED5XmO3lq2SPrBk26OZBGgCoEuNrsdPIUnptNkGG65tl1Buim8 8yRWkXzzz1v16gX206NSi4vYitBijtItizWJmkNnURhVbx+/TifmBAUvfC1Qjb+C2bey qINw== X-Gm-Message-State: ACgBeo23KSCloUgxk/iDLD79GuWzXhMxEeP2g89nGi8aOvTh/vBCKRX/ cm2nfhWD2WSNTpSEn3s3ic1qPaPBOyw= X-Google-Smtp-Source: AA6agR6WFWEK1Q4c0u+SojHvOH7ZDykrvhOtVUVRIujfrrQFJvaD5XJkEV02JvIa8zXMU6tawxfyow== X-Received: by 2002:a05:622a:406:b0:343:7ae:4fe9 with SMTP id n6-20020a05622a040600b0034307ae4fe9mr6274931qtx.541.1660367104183; Fri, 12 Aug 2022 22:05:04 -0700 (PDT) Received: from hurd (dsl-205-233-125-72.b2b2c.ca. [205.233.125.72]) by smtp.gmail.com with ESMTPSA id n18-20020a05622a11d200b0031ed3d79556sm3427306qtk.53.2022.08.12.22.05.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Aug 2022 22:05:03 -0700 (PDT) From: Maxim Cournoyer To: jgart Cc: Guix Help Subject: Re: xcons is a con? References: <20220812180306.GB2813@gac> Date: Sat, 13 Aug 2022 01:05:02 -0400 In-Reply-To: <20220812180306.GB2813@gac> (jgart@dismail.de's message of "Fri, 12 Aug 2022 18:03:06 -0500") Message-ID: <87y1vsd98h.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=2607:f8b0:4864:20::82f; envelope-from=maxim.cournoyer@gmail.com; helo=mail-qt1-x82f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-guix@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+larch=yhetil.org@gnu.org Sender: "Help-Guix" X-Migadu-Flow: FLOW_IN X-Migadu-To: larch@yhetil.org X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1660367139; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=e0NDfaJiHPIkC45uzHwzaBkt+Ut4FeDVGR72VCmxZMs=; b=RuS705C/mMs0+hTEIqWxl++jrURom8v4KU2gLaq4GIH/ML36wef2Dshrn4+C3ec+bzurET ZHOihR1+cu+/fub5djOx8mnGadHldrMXeq41KwTIA+9AAEkL6BNm4rfsSpEQvuN/N8cKck BaqWUUKyJry9JG8UG5hSa54YcXr/ghz0YQSx3urhflsq5ruDmGKKVhOEmDnxoAevJmRie/ Wx2mJa1pOl4FFU9jHWiPXaCjK+ociCbMCZGdnrfRJ3NP9vQnrQPK/8xNebauMG9MfHqhfB Q2hCnzaEXsbQ5BWPihlxzoX3+RWEN4PQyd50dZo0xtfoStJvI4ve9b2aGcbp7Q== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1660367139; a=rsa-sha256; cv=none; b=P7b9dFkP89QTv7K1PJU4eUDumOOL5rxN/LFv9c/dD8VRj6C7yR+hKwyA+WiEFdsStteWej cXQ14HRfC0hdF5wx1G4czaWBciU7I577wOIy4mWOsqdZSkoIuA/j7WpCwdWVXW/YnVk4eG Wf3CyTufkMTRtkfejB3IA5HAZCYxB7i7sUunZfdrwaLkxs0zUYKv34pgQVv/hUFS/WK/KJ 0OGCEyllx8D2q+QUjEUJfphHMfaX0CC0SgHAPdcX46RxvUbIZQTKdkdaeNLUxhpNkV07Sm D5vTE0ihCD4iFne5EYobWk7LJqcdosOLjwiXwpKXHPLVI5aOj6vYkMj+c7/vZA== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=ShDSwZFa; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of "help-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="help-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -6.36 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=ShDSwZFa; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of "help-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="help-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 390A725F2A X-Spam-Score: -6.36 X-Migadu-Scanner: scn0.migadu.com X-TUID: /zZFqgXz0/DY Hi, jgart writes: > Hi Guixers, > > What is a non-trivial use of xcons in the context of a hof? > > I realize I can use fold to reverse a list with xcons but how do > guixers use xcons in the common practice? I don't :-). But thanks for letting me know xcons was a thing. Maxim