From: maa@liacc.up.pt (Mário Amado Alves)
Subject: Re: parse word from a string
Date: 15 Nov 2002 03:12:08 -0800
Date: 2002-11-15T11:12:08+00:00 [thread overview]
Message-ID: <4a4de33a.0211150312.4180a570@posting.google.com> (raw)
In-Reply-To: u3cq4yroo.fsf@wanadoo.fr
"If you are using GNAT be sure to look at GNAT.AWK. (Pascal)"
"Uhg, no! Look at GNAT.Spitbol ;-)" (MAA)
"I disagree :) GNAT.AWK handles files directly. In GNAT.Spitbol you
still have to open and read each lines. And since the problem at hand
seems to justslice a string with a set of separators, GNAT.AWK seems
just fine ;)" (Pascal)
Actually the original problem is "read words from a file", and for
that a simple character automaton in 'pure' Ada suffices, e.g.
C : Character
Word : Unbounded_String;
begin
loop
Get_Immediate (C);
if Is_Graphic (C) and C /= ' ' then
Append (Word, C);
else
Process (Word);
Word := Null_Unbounded_String;
end if;
end loop;
exception
when End_Error =>
if Word /= Null_Unbounded_String then Process (Word); end if;
I was just advocating Spitbol over AWK in the case of general pattern
matching. You seem to agree that Spitbol might be better for complex
problems. And Spitbol is also good enough for simple problems. Ergo,
Spitbol is better ;-)
More seriously, it is better strictly in a Reduced Technology Mix
framework.
Again, for the simple problem at hand, I follow Robert Dewar's famous
adage: "don't use pattern matching".
Cheers,
--MAA
prev parent reply other threads:[~2002-11-15 11:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-12 19:25 parse word from a string Sarah Thomas
2002-11-12 21:36 ` Michal Nowak
2002-11-13 9:46 ` Pascal Obry
2002-11-13 17:23 ` Mário Amado Alves
2002-11-14 17:41 ` Pascal Obry
2002-11-15 11:12 ` Mário Amado Alves [this message]
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