[julia-users] Immutable vs. Mutable composite types

[Nitin Arora]

I have couple of questions regarding immutable types:

1.  For "MyDataVector"  data structure like this :

immutable Foo
    data1::Vector{Float64}
data1::Vector{Float64} 
end

MyDataVector = Array{Foo, 10000 }


Is it useful or recommended to use