From owner-sc22wg5+sc22wg5-dom8=www.open-std.org@open-std.org Wed Sep 27 00:34:20 2017 Return-Path: X-Original-To: sc22wg5-dom8 Delivered-To: sc22wg5-dom8@www.open-std.org Received: by www.open-std.org (Postfix, from userid 521) id F27813587DC; Wed, 27 Sep 2017 00:34:19 +0200 (CEST) Delivered-To: sc22wg5@open-std.org Received: from mail.jpl.nasa.gov (mailhost.jpl.nasa.gov [128.149.139.109]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by www.open-std.org (Postfix) with ESMTP id EDF32356D2C for ; Wed, 27 Sep 2017 00:34:08 +0200 (CEST) Received: from [137.79.7.57] (math.jpl.nasa.gov [137.79.7.57]) by smtp.jpl.nasa.gov (Sentrion-MTA-4.3.1/Sentrion-MTA-4.3.1) with ESMTP id v8QMY54J005744 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128 bits) verified NO) for ; Tue, 26 Sep 2017 15:34:06 -0700 Subject: Re: (j3.2006) (SC22WG5.5954) generic programming in F2020 From: Van Snyder Reply-To: Van.Snyder@jpl.nasa.gov To: WG5 In-Reply-To: <08474B91-8ACB-43E9-8568-8804C9FE3C44@cray.com> References: <20170926174021.A8F283587DC@www.open-std.org> <08474B91-8ACB-43E9-8568-8804C9FE3C44@cray.com> Content-Type: text/plain; charset="UTF-8" Organization: Yes Date: Tue, 26 Sep 2017 15:34:05 -0700 Message-ID: <1506465245.32527.123.camel@math.jpl.nasa.gov> Mime-Version: 1.0 X-Mailer: Evolution 2.32.3 (2.32.3-37.el6) Content-Transfer-Encoding: 8bit X-Source-Sender: Van.Snyder@jpl.nasa.gov X-AUTH: Authorized Sender: owner-sc22wg5@open-std.org Precedence: bulk On Tue, 2017-09-26 at 21:17 +0000, Bill Long wrote: > Hi WG5/J3, > > Attached is a short write-up of a simpler version for templates that’s > been informally discussed for a while. After parameterized modules were dropped in favor of macros, I proposed parameterized procedures. I have concluded they're too simplistic to be worth the effort. If we had done parameterized modules in 2003, I doubt we would have done parameterized types, at least types parameterized by kind, and we wouldn't have had the disconnect between parameterized types and type-bound procedures that Richard Maine warned about in 1997. I prefer parameterized modules, or doing nothing again. Parameterized procedures are not worth the effort. Someday somebody will look at the history of Fortran development and say "Wow! Home Depot must have had a monster sale on paint for these guys to have painted themselves into so many corners!"