Juerd wrote:
Ingo Blechschmidt skribis 2005-04-28 14:30 (+0200):
does the following work as expected?
for %hash.pairs -> $pair { # Note: No "is rw"!
$pair.value = ...; # Modifies %hash
}
Yes, because a pair is an object (reference), and it's not the .value
that you're passing ro.
I come to the some answer but with a different argument.
Calling the .value method on $pair is not considered a
write operation. And indeed the %hash could arrange for
staying unchanged by having a corresponding copy out
implementation of its .pairs method.
I still want <->, by the way.
Me too. And I guess <- naturally completes the set.
Which in turn make me want the parameter traits
'is input' and 'is output'. The former is a synonym
(or replacement?) for 'is const'. Both together form
'is rw' which would be an abbreviation of 'is input&output'.
Regards,
--
TSa (Thomas Sandlaß)
