On Mon, 11 Mar 2019 18:03:26 -0400 David Mertz firstname.lastname@example.org wrote:
Parrot got rather further along than rattlesnake as a register based VM. I don't think it every really beat CPython in speed though.
But Parrot also had a "generic" design that was supposed to cater for all dynamic programming languages. AFAIU, it was heavily over-engineered and under-staffed, and the design documents were difficult to understand.