On 2008 May 10, at 21:46, 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?
At a guess, "is rw" makes a parameter variable into a local read/write variable initialized with the parameter value. Changes to it are not reflected in the caller.
-- brandon s. allbery [solaris,freebsd,perl,pugs,haskell] [EMAIL PROTECTED] system administrator [openafs,heimdal,too many hats] [EMAIL PROTECTED] electrical and computer engineering, carnegie mellon university KF8NH
