I’d like to have an array which elements
A[i, j] are computed from a given function
f(i, j) (say
f(i, j) = i + j) only when that element is used, i.e. I would not like to build the whole matrix beforehand.
I was thinking of maybe writing a new type which subtypes AbstractArray, but it’s a bit of work. I’ve tried looking for implementations of something like that, but wasn’t able to find anything.
Does anyone has any suggestions?