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Do(n't) Use This Code—Expert Training & Consulting on Twitter: "#AdventOfCode Day #11, Parts #1 & #2 Summary: · straightforward with NumPy (e.g., `collections.Counter` → `numpy.unique`; `set` → masking tricks) · use generator
The Kronecker product function "kron" should return a matrix (instead of an array) at least for matrix inputs (Trac #71) · Issue #555 · numpy/numpy · GitHub
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