Christoph Pospiech <christoph.pospi...@de.ibm.com> wrote on 06/01/2010
01:51:08 AM:
>
> This brings me to a question of more philosophical or aesthetic nature.
>
> Why is it
> val v_rail:Rail[double] =
> Rail.make[double](n, (i:Int) => {(i*1.0) as double});
> but
> val v:Array[double] =
> new Array[double](n, (i:Int) => {(i*1.0) as double});
> ?
>
> I would have expected that for every X10 class I could use "new
<class_name>"
> which internally may call "make.<classname>".
>
This is an implementation flaw leaking through to the API. Rail (and
ValRail) are @NativeRep classes with generic type parameters. The compiler
doesn't properly handle constructors for such classes, so we have to use a
static make method to hack around the compiler bug. The goal is to make
Rail and ValRail disappear as user visible classes (ie, they will be
typedefs for Array(1)/ValArray(1)) at which point this wart will also go
away.
--dave
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