But note that there are good reasons to use singletons in Perl. The most common one for me is when the object is expensive to create (database connections etc) and might need to exist for many reasons, but might be possible to do without. In that case then you just use a singleton and issue calls to its constructor from wherever you need it.
Now no matter how complex the logic is to need it, it is there when you want, and you don't pay for it when you don't need it.
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