Where to start?

External Since: Nov 08, 2007 Posts: 90

On 13 fév, 15:49, Gerry Quinn <ger....DeleteThis@indigo.ie> wrote:
> In article <f1f5db3c-6200-4429-8774-a36913a980a0
> @i7g2000prf.googlegroups.com>, jice.nos....DeleteThis@gmail.com says...
>
> > On 12 fév, 18:46, Ray Dillinger <b....DeleteThis@sonic.net> wrote:
> > > jice wrote:
>
> > > > I personally never check for null pointers or out-of-bounds array
> > > > indices for several reasons :
>
> > > It's up to you of course. But I find C to be quite treacherous
> > > if you don't watch it every minute.
>
> > > Checking with "assert" is quick and painless, most of the time, and I
> > > recommend it.
>
> > What bothers me with assert is that it only exit the program and tell
> > you :
> > Assertion failed: XXX, file YYY, line ZZZ
>
> > Then, you have to 1/ restart the program, 2/ put breakpoints, 3/
> > reproduce the issue, 4/ watch variable to find its cause...
>
> > With a good old unchecked segmentation violation, you're immediately
> > at step 3.
>
> In MSVC, the ASSERT macro stops the program (in debug mode - in release
> mode it is ignored). It shows you the region of source where it
> occurred and allows you to inspect variables etc.
>

Ok, I didn't know that. If fact, it may also work like this on Linux.
I spend most of my debug time on mingw32, which is apparently a bad
idea...

--
jice

External Since: Nov 27, 2007 Posts: 26

Saluton!

On Wed, 13 Feb 2008 00:26:05 -0800 (PST), "Ulf_Åström" wrote:
> On 13 Feb, 00:54, "Jürgen Lerch" <jyn....TakeThisOut@gmx.de> wrote:
> > On Tue, 12 Feb 2008 00:22:24 -0800 (PST), "Ulf_Åström" wrote:
[Enums]
> > > I'm not sure if it's a good idea to use them as array indices though;
> > > I do it, but it's probably bad practice.
> > Well, in Pascal/Modula I do it all the time. Why not in C?
> Metadata addiction, meaning it would probably be bad practice in many
> other languages, but C doesn't really care; it just wants to get stuff
> done (just like myself).

Uh?
Metadata addiction?
I actually consider it rather good practice. (There's one
danger, however: When you rearrange or add to the type you
have to make sure that your loops still work as intended.)

> C implements enums like integers and permits normal arithmetic on
> them, so technically it's correct. What bothers me is that they
> shouldn't really be numbers, just *values*.

Yes. That's what they are in the Wirth languages. There you
can't just say a := Red + 1; (you could of course use type
conversion (or INC(a))).

Ad Astra!
JuL

--
jynwyn.TakeThisOut@gmx.de / Reality is a crutch for those who can't
Jürgen ,,JuL'' Lerch / cope with fantasy