Re: Use with variable

Others have answered (the eval route is the way I'd go); but I have a question. Was your query merely curiosity, or have you actually found a use for this technique?

I've never encountered a problem where this was the solution, and I'm just curious from a "hey, that's really unusual" point-of-view. Would you mind sharing more about what you're doing?

^{--

$me = rand($hacker{perl});}

Comment on Re: Use with variable

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Re^2: Use with variable by edan (Curate) on Sep 08, 2004 at 15:09 UTC
It's easy to think of applications for this technique. Any sort of "plug-in" or "load-on-request" situation. Or "drivers", for instance. Ever use DBI? Notice how you only have to "`use DBI;`" and then the appropriate "DBD::*" module is loaded according to the datasource in your `DBI->connect()` call? That magic is done by dynamically loading a module that is contained in, yes, you guessed it, a variable! Actually, the eval method is used there: `# --- load the code my $driver_class = "DBD::$driver"; eval qq{package # hide from PAUSE DBI::_firesafe; # just in case require $driver_class; # load the driver }; if ($@) { #....` [download] -- edan	[reply] [d/l]
Re^3: Use with variable by radiantmatrix (Parson) on Sep 08, 2004 at 15:34 UTC
Hey, neat. I've never written anything that could benefit from plugins, so I never encountered the need for that before. I definitely need to file that one away for later. Thanks! ^{-- $me = rand($hacker{perl});}	[reply]


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