Learned today that Perl 6 won't be compatible with 5. Luckily I have no skin in the game, but it's amazing that language designers made this mistake after the hard lesson of Python 2 to 3 — a division that will have taken 12 years to resolve (if the 2020 sunset works this time).
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It doesn’t matter when it started — it only matters when it was released. Any time up to and including that point you can change (go for backwards compatibility), or cancel your plans.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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