There are other indicators for the fact that the object system was bolted on afterwards.
Or as Larry likes to say, it wasn't "bolted on", it was "bolted through" :)
It has often been claimed that Perl 5 OO was "bolted on", but that's inaccurate.
It was "bolted through", at right angles to all other reference types, such that
any reference could be blessed into being an object.
The above Larry quote is taken from the "Some of the Problems with Perl 5 OO" section of
A12.
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