I believe features like Hash::Util should be embedded into the language itself, rather than add-on module. If the language is too permissive, it'll not only opened to mistakes, but will increase the size of the code itself, because programmer who like strictness (like me) need to add more codes.
At this point, i agree with Mr.Stroustroup(C++), that he once suggested (and still standing on it), that this kind of controls should be part of the language itself. The advantages :
- easy for beginner (secure by default)
- reduce code
- clear program
Anyway, i'm considering this as suggesting, rather that criticize I'm not saying this is your mistakes, Mr Wall :)

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