Signatures are experimental, see[1]. Unfortunately, that means that it requires boilerplate. [1] https://www.effectiveperlprogramming.com/2015/04/use-v5-20-sub

Signatures are experimental, see[1]. Unfortunately, that means that it requires boilerplate. [1] https://www.effectiveperlprogramming.com/2015/04/use-v5-20-subroutine-signatures/ https://www.effectiveperlprogramming.com/2015/04/use-v5-20-s...