RecursiveArrayTools.jl is a set of tools for dealing with recursive arrays like arrays of arrays.
For information on using the package, see the stable documentation. Use the in-development documentation for the version of the documentation, which contains the unreleased features.
using RecursiveArrayTools
a = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
b = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
vA = VectorOfArray(a)
vB = VectorOfArray(b)
vA .+ vB # Now all standard array stuff works!
a = (rand(5),rand(5))
b = (rand(5),rand(5))
pA = ArrayPartition(a)
pB = ArrayPartition(b)
pA .+ pB # Now all standard array stuff works!