Actually, all informations are available at compile time ...

Divining that information is the topic of Escape Analysis, and its far from trivial to find what values will remain local to a subroutine in the general case.

If you want to put more restrictions on the "native" type, maybe you can make this easier, but that amounts to basically having a second set of data types that are not interoperable with the rest of Perl.

In reply to Re^3: Why not perl have raw/native type by Corion
in thread Why not perl have raw/native type by xiaoyafeng

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