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"There's a reason almost no widely used language implementation relies on ref-counting. CPython is the only real exception"

Perl is also ref counted. Swift too.

Edit: Also TCL, and PHP is mostly recounted...the "GC" just deals with circular refs.

Just for the record: Raku (née Perl 6) most definitely does not do refcounting. If you want to do serious async programming, refcounting becomes a nightmare to get right and/or a source of potential deadlocks.

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