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NAME

     warnings - Perl pragma to control optional warnings



SYNOPSIS
         use warnings;
         no warnings;

         use warnings "all";
         no warnings "all";

         use warnings::register;
         if (warnings::enabled()) {
             warnings::warn("some warning");
         }

         if (warnings::enabled("void")) {
             warnings::warn("void", "some warning");
         }




DESCRIPTION
     If no import list is supplied, all possible warnings are
     either enabled or disabled.

     A number of functions are provided to assist module authors.

     use warnings::register
         Creates a new warnings category which has the same name
         as the module where the call to the pragma is used.

     warnings::enabled([$category])
         Returns TRUE if the warnings category `$category' is
         enabled in the calling module.  Otherwise returns FALSE.

         If the parameter, `$category', isn't supplied, the
         current package name will be used.

     warnings::warn([$category,] $message)
         If the calling module has not set `$category' to
         "FATAL", print `$message' to STDERR.  If the calling
         module has set `$category' to "FATAL", print `$message'
         STDERR then die.

         If the parameter, `$category', isn't supplied, the
         current package name will be used.

     See the Pragmatic Modules entry in the perlmod manpage and
     the perllexwarn manpage.









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Created 1996-2024 by Maxim Chirkov

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