Re: Scalar followed by parenthetical...

$_{A} tries to access the %_ hash and not a "Scalar followed by parenthetical" ...

  DB<126> $_{A}=42
 => 42

  DB<127> \%_
 => { A => 42 }
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... which seems to be a predeclared global like $a.

Check special vars.

...

Couldn't find it in perlvar, but I assume the symbol _ has a special "freedom" in Perl.

I.a.w. @_ and $_ are extending their magic to %_! ¹

I think you will have to learn to live with it... =)

Cheers Rolf

( addicted to the Perl Programming Language)

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Re^2: Scalar followed by parenthetical... by ikegami (Patriarch) on May 19, 2013 at 07:28 UTC
...maybe it's a side-effect of how those specially named variables are vivified. Oh, and strike that "maybe" :)	[reply]
Re^3: Scalar followed by parenthetical... by tobyink (Canon) on May 19, 2013 at 17:27 UTC
It is. The way the punctuation variables are implemented, if `$X` exists (assuming `X` is a punctuation character), then `@X` and `%X` also exist. There are one or two CPAN modules that make use of the magic global `%_`. MooseX::Params is an example. With a bit of digging around in perlvar you can figure out plenty of spare global variables. I use them occasionally in local code (`%\` is one of my favourites), but have so far resisted the urge to publish anything using them. Global variables don't usually make for very good reusable code. `package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name`	[reply] [d/l] [select]