Adding 1d array into 1d array (or Vector?) in mutable structs

New to Julia
1

Hello everyone! I’m an industrial engineer and relatively new to Julia, so I’m sorry for any possible conceptual mistakes here.

I am interested in creating a vector containing multiple 1d arrays within a mutable structure called “Cell” like the following:

mutable struct Cell
    Mat::Float16
    IM::Float16
    Bmut::Float16
    Fit::Float16
    OF::Int32
    Sol::Vector{Int16} # This vector should contain multiple 1d arrays

    Cell() = new(0.0, rand(Float16), rand(Float16), 0.0, 0, Vector{Int16}[])
end

I can properly initialize Cell with a variable called POP:

POP = Cell()

However, I cannot add elements (1d arrays) using push! into POP.Sol, i.e.:

K = Vector{Int16}[[1, 2, 3], [4, 5, 6]]

for i in 1:2 
    push!(POP.Sol, K[i])
end

The following error message appears: “LoadError: MethodError: Cannot convert an object of type Vector{Int16} to an object of type Int16”. In contrast, doing this is totally fine:

Z = Vector{Int16}[]

for i in 1:2 
    push!(Z, K[i])
end

Could anyone tell me how could I add the elements of K into POP.Sol such that POP.Sol = [[1, 2, 3], [4, 5, 6]]?

Best wishes!

2

You want Sol::Vector{Vector{Int16}}

3

Thanks Oscar!