Re^7: How does Math::GMP overload the assignment operator ? (more guessing)

[jcb]

Is there a string conversion overload in Math::GMPz? Perl has quite a few ways to construct overloaded operators from other operators, and one possibility is to first convert the object to a string and then use the builtin string->number conversion.

[syphilis]

one possibility is to first convert the object to a string and then use the builtin string->number conversion

Yes, that seems consistent with the behaviour I've noticed.
In the absence of a specified '0+' overload subroutine, $array[Math::GMPz->new(-2)] would be stringified to $array["-2"] and then numified to $array[-2]

Cheers,
Rob