On Mon, Oct 29, 2001 at 11:57:47AM +1100, Damian Conway wrote:
> AJS> How would this play with constants?
>
> class Demo {
> my $threshold is const = 100;
Hmm... is a "my const" the same as an "our const"? If so, does this mean
that there will be no such thing as a C++-style const (constant per
instance)?
I'm thinking something like:
class Demo {
my $id is immutable;
method INIT ($demo_id is initializer ($id)) {}
"is initializer" is rather long, but you get the idea.
Does this help Perl at all? Maybe. It depends on the implementation
of the core. Does it help Perl programmers? I think so. It's nice
to be able to state with surety that a member will not be changed
by any of the methods.
> > Seriously, it would be nice to have a BNF somewhere, even if it changed
> > every day, and had a few "alternates" sections... I'd be interested
> > in starting this if no one else has their heart set on doing it. Perhaps
> > I could get it into a CVS archive so that we can all edit it on our
> > own branches.
> >
> > I'm not proposing anything super-useful for actually cranking out
> > Perl6's perly.y, but just a high-level view of the operators and
> > essential syntax.
>
> I'm planning to write a Perl6::Classes module as a proof-of-concept to
> accompany my proposal.
Ok. I'll keep an eye out for this, and meanwhile I'll dust off my
BNF skills.
--
Aaron Sherman
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In the land that our grandchildren knew." -Queen/_'39_
