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Postings from September 2000
Perl6 RFC Librarian wrote:
>> =head1 DESCRIPTION
>
> What is currently an optimization for pseudo-hashes:
>
> my Dog $spot = Dog->new();
>
> should be replaced with:
>
> my Dog $spot;
>
> which calls an implicit constructor (discussed further in the IMPLEMENTATION
> section). The optimization behaviour can be retained in some form (see the
> MIGRATION section).
My previous concerns have not been adressed:
- There may not be a default constructor
- This makes creations of Singleton classes impossible
- There is a good reason to created typed, but undef, references
and fill them in later.
> For example, the syntax:
>
> my Dog $spot = "Spot";
>
> would be transformed to, or be the equivalent of:
>
> $spot = Dog->$METHOD("Spot");
Based on my C++ experience, this should only be allowed if the
constructor has been marked as 'implicit construction safe'.
Hildo