Sum of products of columns in polars

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Peter Schneider
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Sum of products of columns in polars
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(stackoverflow.com/users/620679/scott-deerwester)Scott Deerwester
(stackoverflow.com/users/14196524/euang)EuanG
(stackoverflow.com/users/25260101/ticktalk)ticktalk
(stackoverflow.com/users/22287940/henry-harbeck)Henry Harbeck
A special thanks goes out to the (stackoverflow.com/questions/79506916/sum-of-products-of-columns-in-polars)Stackexchange community

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