From: mheaney@on2.com (Matthew Heaney)
Subject: Re: Array Of Constant Strings?
Date: 15 Apr 2003 19:17:14 -0700
Date: 2003-04-16T02:17:15+00:00 [thread overview]
Message-ID: <1ec946d1.0304151817.7182ecd8@posting.google.com> (raw)
In-Reply-To: b7h7i3$op4$1@a1-hrz.uni-duisburg.de
Georg Bauhaus <sb463ba@d2-hrz.uni-duisburg.de> wrote in message news:<b7h7i3$op4$1@a1-hrz.uni-duisburg.de>...
>
> Will you collect a few impressions students have of the
> readability of Ada programs? (As this might add more substance to
> the argument that Ada syntax has advantages.)
Well, here's one case where the C syntax is much simpler. In order to
declare an array of strings in C, all I have to do is:
const char* sa[] =
{
"now",
"is",
"the",
"time"
};
To do the equivalent in Ada, I'd have to do this:
type String_Constant_Access is
access constant String;
type String_Array is
array (Positive range <>) of String_Constant_Access;
Now_String : aliased constant String := "now";
Is_String : aliased constant String := "is";
The_String : aliased constant String := "the";
Time_String : aliased constant String := "time";
SA : constant String_Array :=
(Now_String'Access,
Is_String'Access,
The_String'Access,
Time_String'Access);
Tucker showed this on CLA once:
SA : constant String_Array :=
(new String'("now"),
new String'("is"),
new String'("the"),
new String'("time"));
Since all the string literals have static values, then no heap is
really allocated. But this is really a compiler optimization -- I
don't know whether you can really depend on it.
next prev parent reply other threads:[~2003-04-16 2:17 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-14 2:58 Array Of Constant Strings? Dr Nancy's Sweetie
2003-02-14 4:28 ` tmoran
2003-02-14 7:28 ` Dale Stanbrough
2003-02-14 7:47 ` tmoran
2003-02-14 10:06 ` Dale Stanbrough
[not found] ` <19guh-2f4.ln1@beastie.ix.netcom.com>
2003-02-14 19:41 ` Jeffrey Carter
2003-02-14 20:38 ` tmoran
[not found] ` <e0q0i-n14.ln1@beastie.ix.netcom.com>
2003-02-15 22:28 ` Jeffrey Carter
2003-02-22 19:31 ` Robert A Duff
2003-04-14 18:43 ` Dr Nancy's Sweetie
2003-04-15 11:36 ` Georg Bauhaus
2003-04-15 13:40 ` Dr Nancy's Sweetie
2003-04-15 15:13 ` Georg Bauhaus
2003-04-16 2:17 ` Matthew Heaney [this message]
2003-04-16 16:35 ` Chad R. Meiners
2003-04-16 21:03 ` Georg Bauhaus
2003-04-17 17:53 ` Robert A Duff
2003-04-17 20:34 ` Georg Bauhaus
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