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Re^4: 5.18.0 is available NOW!

by davido (Archbishop)
on May 23, 2013 at 07:22 UTC ( #1034900=note: print w/ replies, xml ) Need Help??


in reply to Re^3: 5.18.0 is available NOW!
in thread 5.18.0 is available NOW!

Yes, still works. That's not explicitly creating a lexical $_.

Here's an excerpt from Perl 5.18.0's "perlvar" (I'm not linking here because perldoc.perl.org hasn't loaded up v5.18 yet.):

$_ is by default a global variable. However, as of perl v5.10.0, you can use a lexical version of $_ by declaring it in a file or in a block with "my". Moreover, declaring "our $_" restores the global $_ in the current scope. Though this seemed like a good idea at the time it was introduced, lexical $_ actually causes more problems than it solves. If you call a function that expects to be passed information via $_, it may or may not work, depending on how the function is written, there not being any easy way to solve this. Just avoid lexical $_, unless you are feeling particularly masochistic. For this reason lexical $_ is still experimental and will produce a warning unless warnings have been disabled. As with other experimental features, the behavior of lexical $_ is subject to change without notice, including change into a fatal error.


Dave


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