> That’s unnecessarily quadratic. Any idea why concat() doesn't optimize it? Hav... | Hacker News

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		dataflow on June 2, 2019 \| parent \| context \| favorite \| on: How to use array reduce for more than just numbers > That’s unnecessarily quadratic. Any idea why concat() doesn't optimize it? Having a refcount of 1 should be enough information to make it linear, right? Or do the GC engines not keep track of refcounts at all?

dbaupp on June 2, 2019 [–]

Tracing GCs usually don't have any recording of the number of pointers to a value.

dataflow on June 2, 2019 | [–]

Python's GC does this though?

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