The OPer seems to want to control one-time printing/logging from outside the package/module

If one really wants a global in some other package, then...

package MyModule;
use strict;
use warnings;

sub f {
    $MyApp::OneTime{+__FILE__.' '.__LINE__} ||= (print("logging\n"), 1
+);
    return();
}
1;

[download]

In reply to Re^3: Why do I get a "used only once" warning here? by ig
in thread Why do I get a "used only once" warning here? by rovf

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