NAME
less - perl pragma to request less of something
SYNOPSIS
use less CPU;
DESCRIPTION
This is a user-pragma. If youre very lucky some code youre using will know that you asked for less CPU usage or ram or fat or... we just cant know. Consult your documentation on everything youre currently using.
For general suggestions, try requesting
CPUor
memory.
use less memory;
use less CPU;
use less fat;
If you ask for nothing in particular, youll 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 hasnt had any real way to communicating any information to anything. Thanks to Nicholas Clark we have user pragmas (see perlpragma) and now
lesscan 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 didnt specify anything, its interpreted as having used the
pleasetag. Its up to you to make this useful.
# equivalent
use less;
use less please;
\f(CWBOOLEAN = less\->of( FEATURE )\fP
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 ) ) {
}
\f(CWFEATURES = less\->of()\fP
If you dont 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 dont 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 its backwards compatible in not doing much. |