Manpages - less.3perl
Table of Contents
NAME
less - perl pragma to request less of something
SYNOPSIS
use less CPU;
DESCRIPTION
This is a user-pragma. If you’re very lucky some code you’re using will know that you asked for less CPU usage or ram or fat or… we just can’t know. Consult your documentation on everything you’re currently using.
For general suggestions, try requesting CPU or memory.
use less memory; use less CPU; use less fat;
If you ask for nothing in particular, you’ll be asking for less
please.
use less please;
FOR MODULE AUTHORS
less has been in the core as a joke module for ages now and it hasn’t
had any real way to communicating any information to anything. Thanks to
Nicholas Clark we have user pragmas (see perlpragma) and now less can
do something.
You can probably expect your users to be able to guess that they can request less CPU or memory or just less overall.
If the user didn’t specify anything, it’s interpreted as having used the
please tag. It’s up to you to make this useful.
“BOOLEAN = less->of( FEATURE )”
The class method less->of( NAME ) returns a boolean to tell you
whether your user requested less of something.
if ( less->of( CPU ) ) { … } elsif ( less->of( memory ) ) { }
“FEATURES = less->of()”
If you don’t ask for any feature, you get the list of features that the user requested you to be nice to. This has the nice side effect that if you don’t respect anything in particular then you can just ask for it and use it like a boolean.
if ( less->of ) { … } else { … }
CAVEATS
- This probably does nothing.
- This works only on 5.10+
At least it’s backwards compatible in not doing much.