Julia Constructors: Member variables not visible / out of scope in constructor - constructor

Question

In C++ I can do the following:
class foo {
private:
int N;
public:
foo(const int pN) {
N = pN;
std::cout << N << std::endl;
}
};
or, with the concept of outer constructors in Julia in mind,
class foo {
private:
int N;
};
foo::foo(const int pN) {
N = pN;
std::cout << N << std::endl;
}
Can you do the same in Julia, i.e., set some member variables and then do something with them? Consider the MWE below:
struct foo
N::Int
function foo(pN::Int)
new(pN)
println("Hello World") # Gets printed
println(N) # ERROR: LoadError: UndefVarError: N not defined
end
end
Why is that and how do I deal with this?
Even more strange is the behaviour for outer constructors:
struct foo
N::Int
end
function foo(pN::Int)
println("Hello World") # Not shown
foo(pN)
println("Hello World") # Not shown
println(N) # No error
end
although I get the warning that the outer constructor overwrites the "default" one - so I suspected that I would at least see something, either print message or Error.

Answer 1

There is no scope. Julia does not have object oriented programming facilities. Store the result of new as self and access the value of N as a field of self.
julia> struct foo
N::Int
function foo(pN::Int)
self = new(pN)
println("Hello World")
println(self.N)
self
end
end
julia> foo(5)
Hello World
foo(5)
Your second example results in a stack overflow.