Oh, and also: if you only want to import a sub into
main::, you should not import the whole typeglob. Also, there is probably no need to import into
main:: —
timestamp is a rather generic name that may be used in some function/module you call, and things will soon get messy. Besides,
local would be pretty much useless inside a BEGIN block (and that is very desirable). Use
BEGIN {
*Module::Derived::timestamp = \&Module::Base::timestamp;
}
or something.
All this means that symbol table tricks should be severely incapsulated so that no living soul ever sees them Exporter.pm can help remove this mess!