C++ namespaces advice

Question

I\'m just teaching myself C++ namespaces (coming from a C# background) and I\'m really starting to think that even with all the things that C++ does better than most other l

Answer 1

what I do when forward declaring looks like this:

 namespace abc { namespace sub { namespace subsub { class MyClass; }}}

My forward declarations are collapsed into single line. Readability of forward declaration is sacrificed in return for the readability of the rest of code. And for definitions I don't use indentations either:

 namespace abc {
 namespace sub {
 namespace subsub {
 
 class MyClass 
 {
    public:
       MyClass();

       void normalIntendationsHere() const;
 };

 }
 }
 }

Using this style requires a bit of discipline at the beginning, but it's the best compromise for me.

---

Since C++17 you can declare namespace with a syntax proposed by the author of the question.

namespace A::B::C { ... }

nested namespace definition: namespace A::B::C { ... } is equivalent to namespace A { namespace B { namespace C { ... } } }.

https://en.cppreference.com/w/cpp/language/namespace