[albany-pm] Typeglobs help!

[Packy Anderson]

And, looking back, I can see that this is one of the suggestions that Mark
made, but he kinda buried it towards the end.  I would have made perlbrew
my first suggestion.


On Fri, Mar 28, 2014 at 12:25 AM, Packy Anderson <packy at dardan.com> wrote:

> Another thought: you say for <REASONS> you can't upgrade "it".  Which item
> does "it" refer to, the "CentOS 5.10" or the "perl 5.8.8"?
>
> Would it be possible to use perlbrew <http://perlbrew.pl/> to install a
> parallel, newer version of perl that, perhaps, you CAN install the XS
> version of Scalar::Util into?  You wouldn't be upgrading either the OS or
> the system perl: you'd be installing a parallel perl installation which has
> it's own library of modules.  It's what I do when I'm on a system and need
> a better perl than what's in /usr/bin/perl; that way, I don't have to worry
> about screwing up anything that depends on the ancient version of perl that
> shipped with the OS.
>
> Just a thought...
>
> -packy
>
>
> On Thu, Mar 27, 2014 at 11:26 PM, Patrick Cronin <oshihuna at gmail.com>wrote:
>
>> I have the book Mastering Perl, and a few months ago I thought I was
>> pretty good. Now I just learned that Mastering Perl is only half of what
>> Perl is all about.
>>
>> Thanks for the info and the link!
>>
>>
>> On Mar 27, 2014, at 10:26 PM, Benjamin Holzman <bholzman at gmail.com>
>> wrote:
>>
>>
>> Don't think there is a pure perl way to do a dualvar. It's got nothing to
>> do with typeglobs, dualvars work by abusing the IVX slot of a PVIV scalar.
>> See http://cpansearch.perl.org/src/RURBAN/illguts-0.36/index.html#svpviv
>>
>>
>> On Thu, Mar 27, 2014 at 9:46 PM, Patrick Cronin <oshihuna at gmail.com>wrote:
>>
>>> I manage a CentOS 5.10 server running perl 5.8.8. For <REASONS>, I can't
>>> upgrade it.
>>>
>>> For some reason, I can't install the XS version of Scalar::Util, and so
>>> I'm stuck using the PP version. Net::OpenSSH relies on Scalar::Util's
>>> dualvar function (which is only available in the XS version of
>>> Scalar::Util) to create a single scalar holding both an integer and string
>>> value. When the scalar is used in a numeric context, the integer value
>>> comes out, and when the scalar is used in a string context, the string
>>> value comes out. I'm trying to write a quick and dirty PP version of
>>> dualvar so I can move on with my life.
>>>
>>> I seem to remember seeing this being done, but no amount of googling is
>>> getting me there. I've looked up typeglobs and the *foo{THING} construct,
>>> but while THING can be SCALAR, it can't be NUMBER or STRING. Does anyone
>>> know the magic to make this happen?
>>>
>>> I'm trying variations of the following:
>>>
>>> my $int = 2;
>>> my $string = "test";
>>>
>>> my $typeglob = $int;
>>> *typeglob{SCALAR} = ${ *string };
>>>
>>> print ($typeglob + 2) . "\n";
>>> print $typeglob . " YES!\n";
>>>
>>> It just feels gross, and it's not working.
>>>
>>> Does anyone have the magic?
>>>
>>> ------------------------------
>>> [image: Patrick's Avatar] *Patrick Cronin*
>>> Computer Lover
>>> Mobile: +1 518 336 5133
>>> Email: oshihuna at gmail.com
>>> Skype: patrickcronin12061
>>>
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>>
>>
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>
>
>
> --
> Packy Anderson
>
> Email:  packy at dardan.com
> GVoice: (646) 833-8832
>



-- 
Packy Anderson

Email:  packy at dardan.com
GVoice: (646) 833-8832
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