\ (backslash) is the namespace separator in PHP 5.3. A \ before the beginning of a function represents the Global Namespace. Putting it there will ensure that the function called is from the global namespace, even if there is a function by the same name in the current namespace.
Namespaces are packages essentially. They can be used like this: namespace MyNamespace { class MyClass { }; } Then in code: MyNamespace::MyClass* pClass = new MyNamespace::MyClass(); Or, if you want to always use a specific namespace, you can do this: using namespace MyNamespace; MyClass* pClass = new MyClass(); Edit: Following what bernhardrusch has said, I … Read more
Just telling you about one other possibility: I like using friend definitions for that: namespace Math { class Matrix { public: […] friend std::ostream& operator<< (std::ostream& stream, const Matrix& matrix) { […] } }; } The function will be automatically targeted into the surrounding namespace Math (even though its definition appears within the scope of … Read more
Namespacing does for functions and classes what scope does for variables. It allows you to use the same function or class name in different parts of the same program without causing a name collision. In simple terms, think of a namespace as a person’s surname. If there are two people named “John” you can use … Read more
Following code prints names of classes in specified namespace defined in current assembly. As other guys pointed out, a namespace can be scattered between different modules, so you need to get a list of assemblies first. string nspace = “…”; var q = from t in Assembly.GetExecutingAssembly().GetTypes() where t.IsClass && t.Namespace == nspace select t; … Read more
Unnamed namespaces are a utility to make an identifier translation unit local. They behave as if you would choose a unique name per translation unit for a namespace: namespace unique { /* empty */ } using namespace unique; namespace unique { /* namespace body. stuff in here */ } The extra step using the empty … Read more
This can be the result of a .Net framework version incompatibility between two projects. It can happen in two ways: a client profile project referencing a full framework project; or an older framework version targeting a newer framework version For example it will happen when an application is set to target the .Net 4 Client … Read more
typeof(T).Name // class name, no namespace typeof(T).FullName // namespace and class name typeof(T).Namespace // namespace, no class name
By default, use namespaced functions. Classes are to build objects, not to replace namespaces. In Object Oriented code Scott Meyers wrote a whole Item for his Effective C++ book on this topic, “Prefer non-member non-friend functions to member functions”. I found an online reference to this principle in an article from Herb Sutter: http://www.gotw.ca/gotw/084.htm The … Read more
Inline namespaces are a library versioning feature akin to symbol versioning, but implemented purely at the C++11 level (ie. cross-platform) instead of being a feature of a specific binary executable format (ie. platform-specific). It is a mechanism by which a library author can make a nested namespace look and act as if all its declarations … Read more