I’m trying to refresh an old code of mine, about 5 years old. I found this function:
## sort array M with respect to colon j function sortbycol(M,j) local col, perm col = M[:,j] perm = sortperm(col) return(M[perm,:]) end
I don’t remember why I used
local. Is it a good practice? Or is it useless? Or what?