JuliaStats/StatsBase.jl — pull request #70 by lindahua (2014-06-13 22:06:12+00:00)
Title: New implementation of weighted sum

A more systematic implementation that covers dense arrays of arbitrary dimensions (using BLAS whenever possible).

For more general arrays (under `AbstractArray`), it still falls back on Cartesian based implementation (a faster path is implemented when `dim = 1`).