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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