JuliaLang/julia

Make `cumsum(A)` compute a summed-area table

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#26 412 ouverte le 10 mars 2018

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arraysgood first issue

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Description

The idea has been discussed in a few places (e.g. https://github.com/JuliaLang/julia/issues/20041#issuecomment-275938676) to make cumsum(A) return a summed-area table for multidimensional arrays.

The 1D case is already a summed-area table, since that's just the cumulative sum along the one dimension.

Happily, the appropriate deprecation for cumsum — deprecating it for AbstractArrays with no dims argument — is already in place, so this is just a tracking issue for the idea.

cc: @simonbyrne

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