Sketch of agent-based model in Julia.jl

abstract Person

type Adult <: Person
    age::Int
    height::Float64
    position::Int
end

type Child <: Person
    age::Int
    height::Float64
    position::Int
    at_school::Bool
end

type Bad <: Person
    age::Int
end

function move!(p::Person)
    p.position += 1
end

function move!(c::Child)
    c.position += 1
    c.at_school = get_ipython().getoutput('c.at_school')
end

a = Adult(3, 4, 5)
move!(a)

c = Child(3, 4, 5, true)
move!(c)

b = Bad(3)
move!(b)  # error since does not have position field

Hey David,

We almost met at JuliaCon a few weeks ago. I am currently working on implementing an agent based model originally done in NetLogo to Julia or Python. Right now it seems Python has some support for making this work easier, but do you know how feasible this will be in Julia? Thanks.

https://github.com/gaomrx/mosquito-3d/blob/master/y-chromosome.nlogo3d