No Problem, Rajesh. Oh BTW, my name is Joseph. lol
--- rajesh bisht <[EMAIL PROTECTED]> wrote:
> Dear Josef. Thanks.
> URL is very usefull.
>
> Thanks .
>
>
> "Joseph A. Marrero" <[EMAIL PROTECTED]> wrote:
>
>
>
> --- John Matthews wrote:
>
> > Hi- first of all, I'm saving up for one of the good C++
> > books. Until
> > then, I hope you won't mind me asking some beginners'
> C++
> > questions.
> >
> > In some C code I've written previously, I have a home
> > made generic
> > list type which is told how big list items are. So
> > list_add()
> > allocates enough memory for a new item and returns a
> > pointer to it, so
> > that the caller can set the item's value. Eg. (in C,
> > simple code to
> > attempt to demonstrate my point)
> >
> > typedef struct
> > {
> > int value;
> > } Item;
> >
> > int main(void)
> > {
> > List items;
> > Item *item_p;
> > /* Initialise the list. */
> > list_init(&items, sizeof *item_p);
> > /* Add (uninitialised) item to end of list. */
> > item_p = list_add(&items);
> > /* Initialise the new item in the list. */
> > item_p->value = 3;
> >
> > Now if I am using STL, this is currently my attempt at
> > the above:
> >
> > class Item
> > {
> > public:
> > Item(int v) { value = v; }
> > int value;
> > };
> >
> > int main()
> > {
> > list items;
> > Item item(3);
> > items.push_back(item);
> >
> > What bothers me slightly is that in the C version,
> there
> > is only one
> > Item - it is created by list_add(), and referenced by a
> > pointer.
> >
> > However, in my C++ version, there are 2 items (as I
> > understand it) -
> > the local variable item, which is initialised and
> passed
> > to
> > push_back() to create a copy of it in the list.
>
>
> Hi John. You may find the following URLs helpful:
>
>
http://www.robthebloke.org/cppdir/StandardTemplateLibrary.htm
> http://www.robthebloke.org/
>
>
>
> >
> > If this is the right and proper way to do it, then
> fine.
> > But I suspect
> > I'm probably missing something.
> >
> > Any help appreciated. I've done some Googling for STL
> but
> > not been too
> > impressed by what I've found so far - if anyone knows
> of
> > a good online
> > STL resource then that would also be gratefully
> received.
> >
> > BTW I'm working in Linux with g++ on the command line.
> >
> > Cheers
> > John
> >
> >
>
>
> _________________
> Joseph A. Marrero
> http://www.l33tprogrammer.com/
>
>
>
>
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_________________
Joseph A. Marrero
http://www.l33tprogrammer.com/
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