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Postings from June 2022
On Mon, Jun 06, 2022 at 11:04:59PM +0200, Ovid wrote:
> sub _internal_func ( $class, undef ) { ... }
>
> But that turns out to be a syntax error, even though it's a common idiom:
Signatures already support an unnamed optional placeholder:
sub _internal_func ( $class, $= ) { ... }
although the syntax is a bit jarring.
As an aside, one of my proposals is for 'default defaults' i.e. where the
default value for an optional arg is omitted and a sensible default is
substituted instead (e.g. when expecting an array ref arg, the default
value might be []). So,
$foo? is a shortcut for $foo = undef
\@a? is a shortcut for \@a = []
etc.
Under that scheme,
$?
would become an alternative for
$=
--
I before E. Except when it isn't.
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