[Haskell-cafe] Questions about slow GC with STArray

[FFT]

On Mon, Apr 6, 2009 at 1:10 AM, Bulat Ziganshin
<bulat.ziganshin at gmail.com> wrote:

> you need to scan only boxes: if array just contains plain cpu-level
> numbers, there is nothing to scan

Are those the only legal contents of STUArray?