use and require normally only load a module once during execution of the script, even if they're called multiple times. Any imports done by use will be done for each use statement, though.

If you really want to reload a module while running the program, you can do something like this (not 100% foolproof): 

use Symbol qw(delete_package);

sub re_use {
  my $module = shift;       # "Module::To::Reload"
  my $fname = $module;
  $fname =~ s#::#/#g;
  $fname .= ".pm";          # "Module/To/Reload.pm"
  delete_package($module);  # remove the Module::To::Reload namespace
  delete $INC{$fname};      # delete the filename from the 
                            # "loaded" list 
  eval "use $module" or die $@;
}

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"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re^3: importing/removing functions from a module into the main namespace by Joost
in thread importing/removing functions from a module into the main namespace by agaffney

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