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-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,5cb36983754f64da
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2004-02-17 01:14:19 PST
Path: 
 archiver1.google.com!news2.google.com!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!nnx.oleane.net!oleane!news-FFM2.ecrc.net!news.iks-jena.de!not-for-mail
From: Lutz Donnerhacke <lutz@iks-jena.de>
Newsgroups: comp.lang.ada
Subject: Re: No call for Ada (was Re: Announcing new scripting/prototyping
 language)
Date: Tue, 17 Feb 2004 09:14:18 +0000 (UTC)
Organization: IKS GmbH Jena
Message-ID: <slrnc33mr9.pa.lutz@taranis.iks-jena.de>
References: <20040206174017.7E84F4C4114@lovelace.ada-france.org>
 <mailman.3.1076142690.295.comp.lang.ada@ada-france.org>
 <m3isij11u4.fsf_-_@insalien.org>
 <54759e7e.0402071124.322ea376@posting.google.com>
 <2460735.u7KiuvdgQP@linux1.krischik.com>
 <54759e7e.0402081525.50c7adae@posting.google.com>
 <Xns9489AEC0F8702jimmaureenrogers@204.127.36.1>
 <54759e7e.0402091826.2847e0c@posting.google.com>
 <vjah20tahj48fftkpeghp29ugnojfdd4r4@4ax.com>
 <54759e7e.0402101819.95cec1d@posting.google.com>
 <pq2dnT0uubMELrfd4p2dnA@comcast.com>
NNTP-Posting-Host: taranis.iks-jena.de
X-Trace: branwen.iks-jena.de 1077009258 18378 217.17.192.37 (17 Feb 2004
 09:14:18 GMT)
X-Complaints-To: usenet@iks-jena.de
NNTP-Posting-Date: Tue, 17 Feb 2004 09:14:18 +0000 (UTC)
User-Agent: slrn/0.9.7.4 (Linux)
Xref: archiver1.google.com comp.lang.ada:5628
Date: 2004-02-17T09:14:18+00:00
List-Id: <comp.lang.ada>

* Robert I. Eachus wrote:
> with Ada.Command_Line; use Ada.Command_Line;
> with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
> with Ada.Strings.Fixed; use Ada.Strings;
> with Ada.Text_Io; use Ada.Text_Io;
> procedure Strcat is
>     N: Integer;
>     Hello : String := "hello" & Ascii.Lf;
> begin
>     if Argument_Count < 1
>     then N := 10_000;
>     else N := Integer'Value(Argument(1));
>     end if;
>     declare
>       Buffer : Unbounded_String := N*Hello;
>     begin
>     Put_Line(Ada.Strings.Fixed.Trim
>               (Integer'Image(Length(Buffer)),Left));
>     end;
> end Strcat;
>
> This results in about a 100x speed up.  Is this the right way to write
> it and the code they had wrong?  In one sense, that probably is true.
> But if I use Bounded_String, the version on the website is slightly
> faster, and both versions fall midway between the fast and slow
> Unbounded versions.  (A version that just uses String is actually faster
> than the Unbounded String version.  However, I think that version is a
> bit of a cheat. ;-)

I do not see any cheat in:

with Ada.Command_Line;  use Ada.Command_Line;
with Ada.Strings.Fixed; use Ada.Strings, Ada.Strings.Fixed;
with Ada.Text_IO;       use Ada.Text_IO;

procedure Strcat is
    N: Natural;
    Hello : String := "hello" & ASCII.LF;
begin
    if Argument_Count < 1 then
       N := 10_000;
    else
       N := Natural'Value(Argument(1));
    end if;

    declare
      Buffer : String := N*Hello;
    begin
      Put_Line(Trim(Natural'Image(Buffer'Length), Left));
    end;
end Strcat;