Re: array initilization and memory usage

Xavier Tarrago wrote:
<jon23d@xxxxxxxxx> a écrit dans le message de
news:1151298741.400576.235390@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

I'm a little new here, so please bear with me if this sounds like a
goofy
question!...

let's say that I have an class with 15 or so members, each taking up a
fair
amount of space - we'll call this class bars

If I create an array of 400 empty bars objects, but only instantiate
the
first five or so then am I still setting aside the memory for the other
395?

I hope that made sense!

Thanks

> I don't think so. new Bar[500] will alocate an array of references. Each
> bars[i] = new Bar() will allocate a Bar so you'll end with an array of 400
> references and 5 Bar allocated.
>

Incorrect.
Bar bar[500]; allocates 500 references on the stack - no big space requirement ... but each new Bar() will allocate a Bar object on the heap and the space requirement for a Bar instance.

--
It's not the inital skirt length, it's the upcreep.
.

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