Yes, absolutely. Using Reflection: static IEnumerable<Type> GetTypesWithHelpAttribute(Assembly assembly) { foreach(Type type in assembly.GetTypes()) { if (type.GetCustomAttributes(typeof(HelpAttribute), true).Length > 0) { yield return type; } } }
You have a class of the same name declared more than once. Maybe via multiple includes. When including other files you need to use something like include_once “something.php”; to prevent multiple inclusions. It’s very easy for this to happen, though not always obvious, since you could have a long chain of files being included by … Read more
If Color is something that is specific to just Cars then that is the way you would limit its scope. If you are going to have another Color enum that other classes use then you might as well make it global (or at least outside Car). It makes no difference. If there is a global … Read more
This is quite an interesting question — and answers might get interesting too ^^ The simplest way to consider things might be : use an instanciated class where each object has data on its own (like a user has a name) use a static class when it’s just a tool that works on other stuff … Read more
Maybe an example demonstrating how both methods are used will help you to understand things better. So, consider the following class: package test; public class Demo { public Demo() { System.out.println(“Hi!”); } public static void main(String[] args) throws Exception { Class clazz = Class.forName(“test.Demo”); Demo demo = (Demo) clazz.newInstance(); } } As explained in its … Read more
Use Reflection: Type type = obj.GetType(); PropertyInfo[] properties = type.GetProperties(); foreach (PropertyInfo property in properties) { Console.WriteLine(“Name: ” + property.Name + “, Value: ” + property.GetValue(obj, null)); } for Excel – what tools/reference item must be added to gain access to BindingFlags, as there is no “System.Reflection” entry in the list Edit: You can also … Read more
inspect.getmro(cls) works for both new and old style classes and returns the same as NewClass.mro(): a list of the class and all its ancestor classes, in the order used for method resolution. >>> class A(object): >>> pass >>> >>> class B(A): >>> pass >>> >>> import inspect >>> inspect.getmro(B) (<class ‘__main__.B’>, <class ‘__main__.A’>, <type ‘object’>)
If you really want to fake multiple inheritance in PHP 5.3, you can use the magic function __call(). This is ugly though it works from class A user’s point of view : class B { public function method_from_b($s) { echo $s; } } class C { public function method_from_c($s) { echo $s; } } class … Read more
You want this: class a: def __init__(self): self.list = [] Declaring the variables inside the class declaration makes them “class” members and not instance members. Declaring them inside the __init__ method makes sure that a new instance of the members is created alongside every new instance of the object, which is the behavior you’re looking … Read more
They are simply showed like this: _______________________ | <<enumeration>> | | DaysOfTheWeek | |_____________________| | Sunday | | Monday | | Tuesday | | … | |_____________________| And then just have an association between that and your class.