Perl reference vs. handing over Benchmark

I want to know if there is a different between a shift and normal handing over to a sub in Perl.This is only for scalar, for big data(array,hash) there is of course a different.

Our result:

If its not necessary we should avoid references for scalar types, and try to iterate and not shift: Perl shift iterate Benchmark.But for Skalar values it is the fastest way to use prototypes.

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