Learning Julia

Container fields with abstract type

This is similar to the issue we just discussed in the previous point, but with a distinction that the field in question is a container, such as an array or hashmap. Let's look at a quick example for that too:

julia> type SampleDataType
           a
       end

julia> alpha = SampleDataType([10,15,20])
SampleDataType([10,15,20])

As usual, the code given here is not efficient. However, the following code includes enhancements similar to the one discussed in the first point:

julia> type SampleDataType{T<:AbstractVector}
           a :: T
       end

julia> alpha = SampleDataType([10,20])
SampleDataType{Array{Int64,1}}([10,20])

julia>