Learning Julia

Type introspection

As we know from the starting chapters that Julia supports multiple dispatch and we can create a new data type from any abstract data type, let's define a new type, named Student, and then create two sample objects for this type:

julia> type Student
           name::String
           age::Int64
       end

julia> alpha = Student("alpha",24)
Student("alpha", 24)

julia> beta = Student("beta",25)
Student("beta", 25)

Pretty simple! Now that we have two of these students, with the names alpha and beta, how can I be sure of which type they are? You should definitely be thinking of a function that we studied earlier, remember? If not, then let's look at the following example for the answer:

julia> typeof(alpha)
Student

julia> typeof(beta)
Student

Ah, the