How to allocate an element of type T with value x in generic code?

[Steven Schveighoffer]

On Wed, 03 Apr 2013 07:05:05 -0400, Tobias Pankrath <tobias at pankrath.net>  
wrote:

> basic idea.
> ---
> T x;
> T* px = new T(x);
> ---
> int x
> int* px = new int(x); // fails
> ---
>
> I need to do this for structs and basic types. What's the standard way  
> to do this?

A crude but easy way to do this:

int *px = [x].ptr;

Only caveat is that the allocated block may be slightly bigger than  
necessary.  If you are concerned about footprint, you may want to do it  
with GC.malloc calls directly.

-Steve