Learning Julia

Inner constructors

Till now, we have seen how to use Julia's predefined types as well as user-defined composite types. Now, we are going to delve a little deeper into learning what happens when a user-defined type gets created, and the applications of making this feature more useful to the end user.

As we have already discussed, when we create a new type, we may or may not include field names in the body. Functions, on the other hand, remain distant, and unlike other object-oriented languages, the methods aren't present.

So when we create a new type's object, the default constructor comes into action:

julia> type Family       num_members :: Int64       members :: Array{String, 1}       endjulia> f1 = Family(2, ["husband", "wife"])Family(2, String["husband", ...