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Title: Optimize ABC caches by ilevkivskyi · Pull Request #383 · python/typing · GitHub

Open Graph Title: Optimize ABC caches by ilevkivskyi · Pull Request #383 · python/typing

X Title: Optimize ABC caches by ilevkivskyi · Pull Request #383 · python/typing

Description: Extensive use of isinstance with ABCs causes significant increase in memory consumption by generics, see https://mail.python.org/pipermail/python-dev/2017-January/147194.html Here I make _abc_cache...

Open Graph Description: Extensive use of isinstance with ABCs causes significant increase in memory consumption by generics, see https://mail.python.org/pipermail/python-dev/2017-January/147194.html Here I make _abc_cache...

X Description: Extensive use of isinstance with ABCs causes significant increase in memory consumption by generics, see https://mail.python.org/pipermail/python-dev/2017-January/147194.html Here I make _abc_cache...

Opengraph URL: https://github.com/python/typing/pull/383

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Optimize ABC negative cache for genericshttps://github.com/python/typing/pull/383/commits/313ca4383f59e62fe75b4746bb12751434570b46
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Add also positive cache and registry linkshttps://github.com/python/typing/pull/383/commits/6382c8a16fe511a80fedb9b8bba79425d1f4810f
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Add ABC optimization to PY2https://github.com/python/typing/pull/383/commits/c464731f013a691677e7602a22aff2832d84d105
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Inline internal helper for more speedhttps://github.com/python/typing/pull/383/commits/423fb755fed7d8519e00c94f2b17847d3aa65eb1
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Fix negative cahce settershttps://github.com/python/typing/pull/383/commits/f998e24e12b360f1bc6618fbc37d28522c85ab1f
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