Can someone explain me how dynamic arrays work in D?
How are they implemented in memory?
is it like this:
struct array
{
type *data;
uint size;
}
or like this
struct array // if size is 8 size of allocated memory is 4+8*4
{
uint size;
uint item[0];
}
Is int[] a reference or struct.

How then this code works?
int[] a; // if a is reference then a is null
a.length = 2; // this calls metod for null reference.

<elud@verat.net> wrote in message news:bnjhs6$2e6q$1@digitaldaemon.com...
> Can someone explain me how dynamic arrays work in D?
> How are they implemented in memory?
> is it like this:
> struct array
> {
> type *data;
> uint size;
> }

It's
    struct array
    {    int length;
            type *data;
    }

> How then this code works?
> int[] a; // if a is reference then a is null
> a.length = 2; // this calls metod for null reference.

Assigning to a.length calls a magic library function. I suggest you try writing snippets of code you're curious about, and run obj2asm on it. I think that will make things a lot clearer.