That's a bit like saying, for example, Python isn't interesting because it doesn't have monads (and they're essential for managing state, or whatever). Differen

That's a bit like saying, for example, Python isn't interesting because it doesn't have monads (and they're essential for managing state, or whatever). Different languages have different ways of doing things, and lacking feature X isn't necessarily a deficiency. Julia generally favours composition over inheritance. You might be interested to look at GTK.jl, its widget/window system. https://github.com/JuliaLang/Gtk.jl https://github.com/JuliaLang/Gtk.jl