ArrayFactory SAM type / toArray

[Raab, Donald]

I was thinking about this.  If the methods returns Object, could we not just have an if-statement check if it was one of the primitive types and return a new int[] or new double[] in the method if they do instead of making the reflective call?

> -----Original Message-----
> From: Brian Goetz [mailto:brian.goetz at oracle.com]
> Sent: Thursday, November 08, 2012 11:44 AM
> To: Raab, Donald [Tech]
> Cc: lambda-libs-spec-experts at openjdk.java.net
> Subject: Re: ArrayFactory SAM type / toArray
> 
> On 9/19/2012 10:27 PM, Raab, Donald wrote:
> > Could we add the following methods to the Class class?
> >
> > T[] emptyArray()
> > T[] newArray(int size)
> 
> I prototyped these, and they work fine for reference types but fall
> apart for primitive arrays.  There *is* a Class literal for int.class,
> but we can't make it return an int[] with this method.  (This is one
> reason that Array.newInstance returns Object.)  Performance testing
> would be needed to ensure they are competitive with alternatives.