Nope, it is not possible. See http://docs.julialang.org/en/latest/manual/types <http://docs.julialang.org/en/latest/manual/types> for more info. Particularly the section:
One particularly distinctive feature of Julia’s type system is that concrete types may not subtype each other: all concrete types are final and may only have abstract types as their supertypes. While this might at first seem unduly restrictive, it has many beneficial consequences with surprisingly few drawbacks. It turns out that being able to inherit behavior is much more important than being able to inherit structure, and inheriting both causes significant difficulties in traditional object-oriented languages. -s > On Sep 24, 2015, at 1:14 AM, nael...@ic.ufal.br wrote: > > Is it possible to subtype a concrete type, like DArray.jl? > > I need to do it, but I don's know how to.
