004 - Namespaces

Namespace → named scope or container that organize and enclose a collection of code elements.
Divides and manage codebase, giving more control.

namespace animals {
	 std::string dog = "Bob";
}
 
int main() {
	std::cout << animals::dog << std::endl;
	
	return 0;
}

• You can nest namespaces in one another. To access them: a::b::c ...
• The using keyword imports namespace elements so the scope does not have to be declared. However, it can be unstable if there are name conflicts

using animals::dog;         // Single elements
 
using namespace animals;    // Entire Namespace