back to arays
Regan Heath
regan at netwin.co.nz
Mon May 15 00:39:06 PDT 2006
On Mon, 15 May 2006 10:05:22 +0300, Max Samuha <maxter at i.com.ua_spamless>
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
The D philosophy is "copy on write". Whenever you have several references
to the same data and you decide to write to the data, you should make a
copy and write to the copy. If you want to constantly have several
references to the same data then yes, you will have to update the
references whenever you make change or write a class to handle that for
you.
Regan
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