48  2405 
On Wed, 20 Oct 2004, Foobarius Frobinium wrote:
Richard Bos wrote: fo******@yourem ailbox.com (Foobarius Frobinium) wrote:
http://thelinuxlink.net/~fingolfin/pointer-guide
I think you should get the distinction between zero and null clear, and
learn not to invoke undefined behaviour, before you start teaching
others about pointers.
Where do I invoke undefined behavior, besides the part marked
/* ERROR!! */??
The second example on the page, which is also the place you confuse
"zero" and "null." And again in the fourth example. Maybe some
other places; I just skimmed to find the things Richard must have been
referring to.
-Arthur fo******@yourem ailbox.com (Foobarius Frobinium) wrote: rl*@hoekstra-uitgeverij.nl (Richard Bos) wrote in message news:<41******* ********@news.i ndividual.net>. .. fo******@yourem ailbox.com (Foobarius Frobinium) wrote:
http://thelinuxlink.net/~fingolfin/pointer-guide
Tell me what you think...
I think you should get the distinction between zero and null clear, and
learn not to invoke undefined behaviour, before you start teaching
others about pointers.
Where do I invoke undefined behavior, besides the part marked /* ERROR!! */??
The issue I was mainly referring to has come up so bloody often on this
newsgroup, that if you'd ever read it for comprehension you'd have know
_exactly_ what I was talking about. Since I don't think that someone
incompetent should be teaching others on the use of pointers (because
it's too bloody dangerous), that's all the help you will get from me.
Richard rl*@hoekstra-uitgeverij.nl (Richard Bos) wrote in message news:<41******* *********@news. individual.net> ... fo******@yourem ailbox.com (Foobarius Frobinium) wrote:
rl*@hoekstra-uitgeverij.nl (Richard Bos) wrote in message news:<41******* ********@news.i ndividual.net>. .. fo******@yourem ailbox.com (Foobarius Frobinium) wrote:
> http://thelinuxlink.net/~fingolfin/pointer-guide
>
> Tell me what you think...
I think you should get the distinction between zero and null clear, and
learn not to invoke undefined behaviour, before you start teaching
others about pointers.
Where do I invoke undefined behavior, besides the part marked /* ERROR!! */??
The issue I was mainly referring to has come up so bloody often on this
newsgroup, that if you'd ever read it for comprehension you'd have know
_exactly_ what I was talking about. Since I don't think that someone
incompetent should be teaching others on the use of pointers (because
it's too bloody dangerous),
Then you'd better get working, going around to all those universities
and colleges where the CS professors confuse arrays and
pointers...thei r infractions are far worse. (And there's plenty of
them.)
Dangerous? Is somebody going to lose a leg?
that's all the help you will get from me.
Richard
Foobarius Frobinium wrote: rl*@hoekstra-uitgeverij.nl (Richard Bos) wrote in message news:<41******* *********@news. individual.net> ...fo******@your emailbox.com (Foobarius Frobinium) wrote:rl*@hoekst ra-uitgeverij.nl (Richard Bos) wrote in message news:<41******* ********@news.i ndividual.net>. ..
fo******@yo uremailbox.com (Foobarius Frobinium) wrote:
>http://thelinuxlink.net/~fingolfin/pointer-guide
>
>Tell me what you think...
I think you should get the distinction between zero and null clear, and
learn not to invoke undefined behaviour, before you start teaching
others about pointers.
Where do I invoke undefined behavior, besides the part marked /* ERROR!! */??
The issue I was mainly referring to has come up so bloody often on this
newsgroup, that if you'd ever read it for comprehension you'd have know
_exactly_ what I was talking about. Since I don't think that someone
incompetent should be teaching others on the use of pointers (because
it's too bloody dangerous),
Then you'd better get working, going around to all those universities
and colleges where the CS professors confuse arrays and
pointers...thei r infractions are far worse. (And there's plenty of
them.)
And why exactly do you want to be counted among the ranks of
the incompetent and dangerously stupid?
Learn from Richard's comments, mend your ways and the misinformation
you spread.
Dangerous? Is somebody going to lose a leg?
I see a certain danger in having the least qualified candidates teach
the next generations.
Apart from that:
It may not have occurred to you yet, but some of the people you
teach one day may work on real life applications. And there,
UB may creep in at the most inconvenient place and strike when
lives or inviolacy depend on what some piece of software does or
did. I certainly would not find it merely inconvenient if I produced
some wrong simulation results causing a structural weakness in a
vehicle which is only exhibited in situations which have not been
tested, for example.
And, having seen more then one one-week-course-too-teach-you-all
with all its minor and major errors, this is a possibility.
-Michael
--
E-Mail: Mine is a gmx dot de address.
"Arthur J. O'Dwyer" <aj*@nospam.and rew.cmu.edu> wrote in message news:<Pi******* *************** ************@un ix40.andrew.cmu .edu>... On Wed, 20 Oct 2004, Foobarius Frobinium wrote:
Richard Bos wrote: fo******@yourem ailbox.com (Foobarius Frobinium) wrote:
http://thelinuxlink.net/~fingolfin/pointer-guide
I think you should get the distinction between zero and null clear, and
learn not to invoke undefined behaviour, before you start teaching
others about pointers.
Where do I invoke undefined behavior, besides the part marked
/* ERROR!! */??
The second example on the page, which is also the place you confuse
"zero" and "null." And again in the fourth example. Maybe some
other places; I just skimmed to find the things Richard must have been
referring to.
I did fix the NULL bit; yes that was pretty bad.
But I can't help but take offense when I come to an NG, not wanting to
cause trouble, and I get a completely uncalled-for brow-beating from
someone, who in this case is one Mr. Vos.
Failing to adhere to a certain feature of the C standard does not
deserve anything more than a kind correction. I taught myself
everything I know about C and pointers, taking special pains to pull
together various bits of frequently incorrect documentation both in
books and on the web (the C FAQ was especially useful), and I'm just
trying to help others. I wouldn't say I'm a C expert; I haven't even
graduated high school yet. I intend to divulge what I've learned in a
comprehensive format. In the process, I merely ask for a little
assistance, not for someone else to bend over backwards, and it seems
I won't get any.
Hence I implore everyone on this NG to behave a little more
respectfully, and remember there /is/ a real person on the other side
of the news server.
-Arthur
On 21 Oct 2004 06:59:49 -0700, fo******@yourem ailbox.com (Foobarius
Frobinium) wrote: "Arthur J. O'Dwyer" <aj*@nospam.and rew.cmu.edu> wrote in message news:<Pi******* *************** ************@un ix40.andrew.cmu .edu>... On Wed, 20 Oct 2004, Foobarius Frobinium wrote: >
> Richard Bos wrote:
>> fo******@yourem ailbox.com (Foobarius Frobinium) wrote:
>>>
>>> http://thelinuxlink.net/~fingolfin/pointer-guide
>>
>> I think you should get the distinction between zero and null clear, and
>> learn not to invoke undefined behaviour, before you start teaching
>> others about pointers.
>
> Where do I invoke undefined behavior, besides the part marked
> /* ERROR!! */??
The second example on the page, which is also the place you confuse
"zero" and "null." And again in the fourth example. Maybe some
other places; I just skimmed to find the things Richard must have been
referring to.
I did fix the NULL bit; yes that was pretty bad.
But I can't help but take offense when I come to an NG, not wanting to
cause trouble, and I get a completely uncalled-for brow-beating from
someone, who in this case is one Mr. Vos.
The above remarks by Mr. Bos hardly qualify as browbeating. You
present yourself as someone qualified to teach others about pointers,
and must expect that folks in this group won't let you get away with
inaccuracies.
--
Al Balmer
Balmer Consulting re************* ***********@att .net
On 21 Oct 2004 04:50:25 -0700, fo******@yourem ailbox.com (Foobarius
Frobinium) wrote: rl*@hoekstra-uitgeverij.nl (Richard Bos) wrote in message news:<41******* *********@news. individual.net> ... fo******@yourem ailbox.com (Foobarius Frobinium) wrote:
> rl*@hoekstra-uitgeverij.nl (Richard Bos) wrote in message news:<41******* ********@news.i ndividual.net>. ..
> > fo******@yourem ailbox.com (Foobarius Frobinium) wrote:
> >
> > > http://thelinuxlink.net/~fingolfin/pointer-guide
> > >
> > > Tell me what you think...
> >
> > I think you should get the distinction between zero and null clear, and
> > learn not to invoke undefined behaviour, before you start teaching
> > others about pointers.
>
> Where do I invoke undefined behavior, besides the part marked /* ERROR!! */??
The issue I was mainly referring to has come up so bloody often on this
newsgroup, that if you'd ever read it for comprehension you'd have know
_exactly_ what I was talking about. Since I don't think that someone
incompetent should be teaching others on the use of pointers (because
it's too bloody dangerous),
Then you'd better get working, going around to all those universities
and colleges where the CS professors confuse arrays and
pointers...the ir infractions are far worse. (And there's plenty of
them.)
How would you know that, not having even graduated high school yet?
Dangerous? Is somebody going to lose a leg?
It could be far worse than that. I worked for twenty years in an
industry where a program's undefined behavior can (and sometimes does)
kill people.
--
Al Balmer
Balmer Consulting re************* ***********@att .net This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: Foobarius Frobinium |
last post by:
Please review this guide for clarity, accuracy, etc. so I can
hopefully compile a very good tutorial on how to use pointers in C,
including advanced topics, that is easy to follow and exposes the
details.
http://thelinuxlink.net/~fingolfin/pointer-guide/
My e-mail address is fake. To really contact me, send mail to:
fingolfinJOHNLENNONSPENIS@thelinuxlink.net, subtracting the blatant
anti-spam component.
|
by: Foobarius Frobinium |
last post by:
http://thelinuxlink.net/~fingolfin/pointer-guide/
I've made a lot of corrections, and put in more new stuff. I have
malloc and pointers to struct's and maybe a few more things and I'm
done.
Examine it and tell me what you think.
|
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