phpMan > man > less(3pm)

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.

      # equivalent
      use less;
      use less 'please';

  "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.