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Postings from December 2010
Vincent Pit wrote:
> The attached patch makes "Package->$method" and "$obj->$method" call
> "&{}" overloading on $method whenever present.
> In that case, it is equivalent to "Package->$ret" and "$obj->$ret",
> where $ret is the value returned from the overloading callback ; except
> when $ret is a scalar reference, in which case $$ret is used as the
> method name.
Why the special case for scalar references?
I would expect ‘$bar = \$_; $foo->$bar’ to do this (which it does currently):
Can't call method "SCALAR(0x826d70)" on an undefined value at -e line 1.
If $_ is blessed into a class, then string overloading will kick in:
$ perl5.10.1 -e 'bless \$_; use overload q\""\=>sub{"aaaa"};$bar = \$_; $foo->$bar'
Can't call method "aaaa" on an undefined value at -e line 1.
The &{} overloading sounds fine to me, as it’s a bug fix as far as I’m concerned.
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