[issue38938] Possible performance improvement for heaqq.merge()

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

This is a large change. And making heaqq.merge a class looks unrelated to the declared goal. I afraid it may add significant overhead.

Since this is an optimization, could you please provide any benchmarks which we can use to check the performance boost?

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nosy: +serhiy.storchaka

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<https://bugs.python.org/issue38938>
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