Short answer: remove the die in line 5. The code will continue to execute.
Longer answer: a main use of require is for loading up modules which are in different files -- in fact, what follows require (unless it's a Perl version number, IIRC) is interpreted as a filename -- the compiler will look for a file called program.pm in the directories where your system's perl modules live.
It doesn't really make sense to require a namespace which lives in the same file.
package is just for declaring a new namespace.
You'll usually want a module to declare its own package,
but that's the only connection between package and require
Philosophy can be made out of anything. Or less -- Jerry A. Fodor
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