> I believe one rewrite of Python's dict was the first mainstream use of this sort of hash map as a default implementation. Technically pypy and I believe php

> I believe one rewrite of Python's dict was the first mainstream use of this sort of hash map as a default implementation. Technically pypy and I believe php implemented this model first, though it's probably most well known from cpython (for which it had been proposed first, by raymond hettinger).