On Thursday, 8 November 2018 at 23:50:18 UTC, TheFireFighter
wrote:
i.e. better encapsulation really is a good thing (although for
many, it a lesson that needs to be learned).
Public/private/protected are hacks anyway - and many
object-oriented languages don't have it. They only provide
extremely limited encapsulation ; the client still sees the
non-public part, and can depend on it in unexpected ways:
// my_module.d
struct MyStruct
{
private:
char[1024] data;
}
class MyClass
{
protected:
abstract void f();
};
// main.d
import my_module;
import std.traits;
import std.stdio;
int main()
{
// depends on the list of private
writefln("MyStruct.sizeof: %s", MyStruct.sizeof); members
// depends on wether 'f' is declared abstract or not.
writefln("isAbstractClass!MyClass: %s",
isAbstractClass!MyClass);
return 0;
}
If you want perfect encapsulation, use interfaces (as already
said in this thread), or PIMPL.
