I use this for long-running mod_perl modules: 
my $class = fetch_from_somewhere;
my $object;
eval {
    $object = $class->new;
};
if ($@) {
    eval ("use $class");
    die ($@) if $@;
    $object = $class->new;
}

[download]
This will include $class.pm only once, the first time it is refferenced. Ideal for mod_perl modules. So performance penalty of compiling "use $class .." code is suffered only once.

In reply to Re: How do I dynamically declare a package name for by gildir
in thread How do I dynamically declare a package name for by Anonymous Monk

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