So, putting use warnings as far down as possible (after the module includes) can enable the most warnings?
Yes. I was bitten by this recently, but now I'm struggling to find an example of where it matters.
But Moose and 5.12 both enable warnings
Neither use 5.12;, nor use 5.14; (5.14 is scheduled to be released today) enable warnings. Some people have proposed that use 5.16; enables warnings.

Question: does no Moose; turn off warnings?

In reply to Re^3: 'use' inside or outside of package declaration? by JavaFan
in thread 'use' inside or outside of package declaration? by John M. Dlugosz

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