You can declare a (mutable) variable of a generic array type as:
var a: Array[Int];
You can create an array of Ints with a local distribution over
the region 0..5 as:
val a = Array.make[Int](0..5->here, (p:Point)=>0);
For more usage examples, see the sample programs in the
distribution.
Hope this helps,
Igor
sarat poluri <sarat.pol...@gmail.com> wrote on 12/08/2009 10:12:51 PM:
> Hi,
>
> How to declare a generic Array? Im using x10 2.0.
>
> Thanks,
> Sarat
>
> On Tue, Dec 8, 2009 at 5:27 PM, Igor Peshansky <ig...@us.ibm.com> wrote:
> sarat poluri <sarat.pol...@gmail.com> wrote on 12/08/2009 05:31:02 PM:
>
> > Hi,
> >
> > Could you please tell me the syntax to use templates in x10.
>
> First off, which version of X10 are you using? The following is for
> X10 2.0.
>
> If by templates you mean generics, then here are some examples:
>
> class C[T] { // generic class
> private val x:T;
> public def m(v:T):T { ... }
> public static def g[U](v:U):U { ... } // generic method
> }
>
> The method g() above is static because we don't yet support generic
> virtual methods.
>
> Note that these aren't C++-style templates. In particular, you can't
> access the type parameter in a static context, nor can you create an
> instance of the type parameter, nor do you have structural resolution
> of methods/fields/operators. Also, static methods live in the
> non-generic incarnation of the class (thus, C.f(), not C[T].f()).
>
> One can, however, constrain the type parameter to implement some
> interface or extend some class, by adding a type constraint like
>
> class C[T]{T <: I} { // generic class, T is constrained to
> extend/implement I
> ...
> }
>
> Hope this helps,
> Igor
--
Igor Peshansky (note the spelling change!)
IBM T.J. Watson Research Center
XJ: No More Pain for XML's Gain (http://www.research.ibm.com/xj/)
X10: Parallel Productivity and Performance (http://x10.sf.net/)
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