Pre-compiling constants in mod

nitin1704 has asked for the wisdom of the Perl Monks concerning the following question:

I was reading mod_perl2 User's Guide. In a perl startup file section, the phrase "pre-compile common constants" was mentioned. What does that mean?

The startup file also "pre-loads commonly used modules" which I understand, but I don't get what compiling constants means. Thanks for the help!

Here is some relevant code (which I don't understand) from the startup file:

use Apache2::Const -compile => 'OK';
use APR::Const -compile => ':common';
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Comment on Pre-compiling constants in mod_perl Download Code

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Re: Pre-compiling constants in mod_perl by Anonymous Monk on Jul 17, 2012 at 06:51 UTC
What does that mean? Don't worry about it, its nothing important But, if you are worried, if you're really interested, look it up, Apache2::Const, APR::Const site:perlmonks.org constants Simple Module Tutorial, constant / perlsub#Constant Functions,Modern Perl	[reply]
Re^2: Pre-compiling constants in mod_perl by nitin1704 (Sexton) on Jul 18, 2012 at 01:49 UTC
Thanks a lot! So it just means that the constants are made available to the module, just not imported. So you still have to use them with their full names. E.g. `Apache2::Const::OK` instead of just `OK`	[reply] [d/l] [select]