Daftar Isi

• NAME
• SYNOPSIS
• DESCRIPTION
• FOR MODULE AUTHORS
  • BOOLEAN = less->of( FEATURE )
  • FEATURES = less->of()
• CAVEATS

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 usingwill know that you asked for less CPU usage or ram or fat or... wejust can't know. Consult your documentation on everything you'recurrently 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 ithasn't had any real way to communicating any information toanything. Thanks to Nicholas Clark we have user pragmas (seeperlpragma) and now less can do something.

You can probably expect your users to be able to guess that they canrequest less CPU or memory or just "less" overall.

If the user didn't specify anything, it's interpreted as having usedthe please tag. It's up to you to make this useful.

  # equivalent
 
  use less;
 
  use less 'please';
 

BOOLEAN = less->of( FEATURE )

The class method less->of( NAME ) returns a boolean to tell youwhether 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 thatthe user requested you to be nice to. This has the nice side effectthat if you don't respect anything in particular then you can just askfor 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.