copy content of vector<BYTE> to BYTE*

[Vince]

Hi,

I have replaced my BYTE* by a vector<BYTE> and before I used to do :

void CCardRecord::Ge tRecData(int nOffset, int nDataSize, CString& csValue)
{
BYTE *pTmp = NULL;
pTmp = new BYTE[nDataSize + 1];
memset(pTmp, 0, nDataSize + 1);
//memcpy(pTmp, &m_pData[ nOffset ], nDataSize);
csValue = pTmp;
}

But now m_pData is a vector.

[Howard]

"White Wolf" <wo***@freemail .hu> wrote in message
news:cs******** **@phys-news1.kolumbus. fi...

gMorphus wrote:
[<<<snip] Now I guess all we need is to remember that Michael Jackson, who is not
in jail and not on bail.
Umm... what? Can you diagram that sentence? Or at least complete it? :-)
Or Knuth.
Ditto.
They have placed the root of evil to a very different place than the
current US government.
Tread lightly there, friend. We may not all like Bush/Cheney, but it's
still OUR government.

Sorry for the (kinda) outburts, nothing personal. I just wanted to point
out that guesswork is evil. Especially if people believe it.

Apology accepted, I guess. ;-)

-Howard
"Life is like a donut. With sprinkles. Mmmm...sprinkle s!"

[White Wolf]

gMorphus wrote:

Ok, after a little investigation I have realized that my solution is
not good.
That operator overlaoding wouldn't work for vector because the type
will be a "const unsigned char *" - which you cannot overload.

Moreover, I think the copy function _cannot_ be overloaded. The reason
for is the same - the vector iterator is simply a pointer, which you
cannot be overloaded or specialised.

Am I right?

No, you aren't.

1.) Copy can be overloaded, since it is *noty* an operator function. Now it
may be a very bad idea to overload it, but it can be done. Although it
cannot (eh, must not) be overloaded as std::copy.

2.) The vector iterator *may* be a pointer. In more and more Standard
Library implementations it is more and more frequently not apointer. And
of course any function can be overloaded and any template can be specialized
for pointers. Operators cannot be. It may be a very bad idea to do so with
"well known functions", but it can be done:

void foo(int);
void foo(char const *);
void foo(std::vector <char>::const_i terator);

Of course, if your iterator implementation happens to use typedefs to create
a type alias const_iterator for char const *, the above code will not
compile.

You do have good point, but your wording uses too strict statements:

"That operator overlaoding wouldn't work for vector because the type
/may/ be a "const unsigned char *" - /and/ you cannot overload /an operator
for that type/."

--
WW aka Attila
:::
SUSHIDO: The way of the Tuna.

[Victor Bazarov]

White Wolf wrote:

[...]
1.) Copy can be overloaded, since it is *noty* [...]

I think it's spelled *naughty*

:-) Sorry, couldn't resist...

[White Wolf]

Howard wrote:

"White Wolf" <wo***@freemail .hu> wrote in message
news:cs******** **@phys-news1.kolumbus. fi...

gMorphus wrote:
[<<<snip]

Now I guess all we need is to remember that Michael Jackson, who is not
in jail and not on bail.

Umm... what? Can you diagram that sentence? Or at least complete it?
:-)

Read Herb Sutter more often. ;-) Did you at least make an attempt to ask
Google about Michel Jackson and optimization? Hints:

"Principles of Program Design" by M.A. Jackson, Associated Press 1975
ISBN 0 12 379050 6

Michael Jackson, rules of optimization:

Rule 1. Don't do it.
Rule 2. (for experts only) Don't do it yet.

Or Knuth.

Ditto.

Not knowing Knuth as a programmer is excuseable. But telling it in public
is not wise. First hit on Google:

http://www-cs-faculty.stanford.edu/~knuth/

I feel like the father, whose 25 years old sun calls out from the toilet: I
have finished, you can come!

They have placed the root of evil to a very different place than the
current US government.

Tread lightly there, friend. We may not all like Bush/Cheney, but it's
still OUR government.

Yours my friend. Not mine. Mine is worse than your, but at least has no
nucular weapons, or any other weapons of mass destruction, with
pronounciation errors or without.

Sorry for the (kinda) outburts, nothing personal. I just wanted to
point out that guesswork is evil. Especially if people believe it.

Apology accepted, I guess. ;-)

Understanding what was said may have been more benefitial.

--
WW aka Attila
:::
Nothing makes your clothes go out of fashion faster than getting a raise.

[White Wolf]

Victor Bazarov wrote:

White Wolf wrote:

[...]
1.) Copy can be overloaded, since it is *noty* [...]

I think it's spelled *naughty*

:-) Sorry, couldn't resist...

Ohm I couldn't resist. (Bad joke, but that's all I can do today.)

--
WW aka Attila
:::
Birthdays are good for you. Statistics show that the people who have the
most live the longest.

[Howard]

"White Wolf" <wo***@freemail .hu> wrote in message
news:cs******** **@phys-news1.kolumbus. fi...

Howard wrote:

"White Wolf" <wo***@freemail .hu> wrote in message
news:cs******** **@phys-news1.kolumbus. fi...

gMorphus wrote:
[<<<snip]

Now I guess all we need is to remember that Michael Jackson, who is not
in jail and not on bail.

Umm... what? Can you diagram that sentence? Or at least complete it?
:-)

Read Herb Sutter more often. ;-) Did you at least make an attempt to ask
Google about Michel Jackson and optimization? Hints:

Sorry. I thought "remember that..." meant something like "remember that you
need to lift the toilet seat...". I suppose you meant it like "remember
that Michael Jackson guy?" As I read it, it wasn't a complete sentence.
"Principles of Program Design" by M.A. Jackson, Associated Press 1975
ISBN 0 12 379050 6

Michael Jackson, rules of optimization:

Rule 1. Don't do it.
Rule 2. (for experts only) Don't do it yet.

Or Knuth.
Ditto.

Not knowing Knuth as a programmer is excuseable. But telling it in public
is not wise. First hit on Google:

Again, I was commenting (joking) about your lack of complete sentences. "Or
Knuth" lacks something as sentences go.
http://www-cs-faculty.stanford.edu/~knuth/

I feel like the father, whose 25 years old sun calls out from the toilet:
I have finished, you can come!

They have placed the root of evil to a very different place than the
current US government.
Tread lightly there, friend. We may not all like Bush/Cheney, but it's
still OUR government.

Yours my friend. Not mine. Mine is worse than your, but at least has no
nucular weapons, or any other weapons of mass destruction, with
pronounciation errors or without.

Sorry for the (kinda) outburts, nothing personal. I just wanted to
point out that guesswork is evil. Especially if people believe it.

Apology accepted, I guess. ;-)

Understanding what was said may have been more benefitial.

(I thought the smiley faces were a clue I was just joking?)

--
WW aka Attila
:::
Nothing makes your clothes go out of fashion faster than getting a raise.

[White Wolf]

Howard wrote:
[SNIP]

Read Herb Sutter more often. ;-) Did you at least make an attempt to
ask Google about Michel Jackson and optimization? Hints:
Sorry. I thought "remember that..." meant something like "remember that
you need to lift the toilet seat...". I suppose you meant it like
"remember that Michael Jackson guy?" As I read it, it wasn't a complete
sentence.

Yeah. It also happens to me. It can be quite fun when you stare at your
own slides on a course. That is when I take a note to simplify the
language. :-)

[SNIP] Again, I was commenting (joking) about your lack of complete sentences.
"Or Knuth" lacks something as sentences go.

And deliberately so. ;-)

[SNIP]

Apology accepted, I guess. ;-)

Understanding what was said may have been more benefitial.

(I thought the smiley faces were a clue I was just joking?)

You were joking and I was serious about the part that please please don't do
guesswork.

--
WW aka Attila
:::
Sorry - yesterday was the deadline for all complaints.