back to arays

[Derek Parnell]

On Mon, 15 May 2006 10:05:22 +0300, Max Samuha wrote:

> I thought array references are similar to object references like in C#
> (actually, thay are object references in C#) and that was my mistake:
> 
> int[] a = new int[20];
> int[] b = a;
> 
> a.length = 40; // a is copied and b is not updated to point to a's
> data;
> 
> Does it mean that anytime i change an array, i have to manually update
> all references to it or should i wrap my array in an Array class so
> that all references to any instance of that array remain valid?
> 
> If the question have been already discussed please refer me to the
> right thread. Thanks

I assume for some valid reason you want this behaviour...

 int[] a = new int[20];
 int[] b = a;
 int[] c = a;
 a[0] = 17;
 writefln("%s %s", b[0], c[0]); // Displays 17 17


The simplest way to do this is  ...

 int[] a = new int[20];
 int[]* b = &a;
 int[]* c = &a;
 a[0] = 17;
 writefln("%s %s", b[0], c[0]); // Displays 17 17


I'm not sure why one would need this behaviour though. Why do you need two
identifiers in the same scope to reference the same data? 

-- 
Derek
(skype: derek.j.parnell)
Melbourne, Australia
"Down with mediocracy!"
15/05/2006 5:49:08 PM