On Sun, May 11, 2008 at 01:46:57AM -0000, John M. Dlugosz wrote: : In S06, what is the difference between "is ref" and "is rw"? The text says that the rw may be converted to an lvalue, and that ref must already be. But what is that supposed to mean?
Mostly that means that rw will cause autovivification and ref won't. Larry