What is the most efficient way to update a position in a matrix or a
vector? I came up with this:
updateVector :: Vector Double -> Int -> Double -> Vector Double
updateVector vec pos val = vec `add` v2
where
v2 = fromList $ (replicate (pos) 0.0) ++ ((val - (vec @>
pos)):(replicate ((dim vec)- pos - 1) 0.0))
but this seems pretty inefficient to me.
thanks,
Anatoly
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