From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,966831d952eefbb X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news3.google.com!newshub.sdsu.edu!elnk-nf2-pas!newsfeed.earthlink.net!stamper.news.pas.earthlink.net!newsread1.news.pas.earthlink.net.POSTED!a6202946!not-for-mail From: Jeffrey Carter Organization: jrcarter commercial-at acm [period | full stop] org User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.3) Gecko/20040910 X-Accept-Language: en-us, en MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Random Input-Size and recognizing ENTER-press References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Message-ID: Date: Sun, 19 Dec 2004 16:01:26 GMT NNTP-Posting-Host: 63.186.48.135 X-Complaints-To: abuse@earthlink.net X-Trace: newsread1.news.pas.earthlink.net 1103472086 63.186.48.135 (Sun, 19 Dec 2004 08:01:26 PST) NNTP-Posting-Date: Sun, 19 Dec 2004 08:01:26 PST Xref: g2news1.google.com comp.lang.ada:7075 Date: 2004-12-19T16:01:26+00:00 List-Id: Marius Amado Alves wrote: > function Get_String return String is > U : Unbounded_String; > begin > loop > Get_Immediate (C); > exit when C = CR; > Append (U, C); > end loop; > return To_String (U); > end; You might want to take a look at the source for Ada.Strings.Unbounded from GNAT before advocating an approach such as this. Every addition of a Character allocates a new String, copies the old String + new Character into the new String, and deallocates the old String. For a string of N Characters, that's N allocations and deallocations. Using Get_Line to obtain the Characters can improve that to N / Buffer'Length + 1. It's not clear that the OP really requires Get_Immediate; the only requirement stated is the need to read an arbitrary-length String. The discussion of recognizing when the Enter key is pressed is part of a proposed solution, not the problem. -- Jeff Carter "C++: The power, elegance and simplicity of a hand grenade." Ole-Hjalmar Kristensen 90