Avinash,
I believe you are looking for the "at" expression:
var ds11 : DS1 = at(GDS1) GDS1(); // this makes a deep copy of the
required data structure
// use ds11 here -- it will not change DS1
HTH,
Igor
P.S. It may be easier for you to both post and receive replies to your
posts if you subscribed to this list.
On Wed, Oct 12, 2011 at 9:22 AM, Avinash Malik <ama...@scss.tcd.ie> wrote:
>
> Hello,
>
> Imagine that I have a data structure called DS1 declared at some
> place Place(0). Imagine that there is also a data structure
> called DS2 at Place(1). I have global references to these
> data-structures called GDS1 and GDS2 pointing to DS1 and DS2
> respectively.
>
> Now, I have a third place Place(2) where I have these global
> references and I want to do some computations.
>
> I know I can write this:
>
> at(GDS1){
> ds1 : DS1 = GDS1(); //get the object from reference at
> references place.
> val ds2 : DS2 = method1(ds1); //do something convoluted on the
> data-structure
> (this will make large copy of "this" class)
> at(GDS2){
> GDS2() = ds2; //set ds2 at GDS2's home.
> }
> }
>
> and it works. But, it makes a number of copies of "this". I mark
> the non required fields transient and hope that everything is
> well and good.
>
> I want to know can I do something like this:
>
> var ds11 : DS1 = null;
> at(GDS1){
> ds11 = GDS1().copy(); //this makes a deep copy of the required
> //data structure
> }
> //And then freely use ds11 here as I want (currently according
> to semantics once I am out of the scope of GDS1, ds11 is null
> again). The essential thing is the copy construct, which lets me
> make a deep copy. Java gives me at least the clone call, which
> lets me make shallow copies, which suffice most of the time. How
> can I achieve this in X10.
>
> --
> Regards,
>
> Avinash Malik
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