Maybe a bit of example code will help: Notice the difference in the call signatures of foo, class_foo and static_foo: class A(object): def foo(self, x): print(f”executing foo({self}, {x})”) @classmethod def class_foo(cls, x): print(f”executing class_foo({cls}, {x})”) @staticmethod def static_foo(x): print(f”executing static_foo({x})”) a = A() Below is the usual way an object instance calls a method. The … Read more
What happens to abc? It contains a function object. If you are doing nothing with it, it will be garbage-collected. Why it works? Why not? What “works”? abc can be called but not def, why? This is only true from outside, and not in IE. See below. Is it a function declaration or an expression? … Read more
I’m going to ignore Aggregation. It is not a very clearly defined concept and in my opinion it causes more confusion than it is worth. Composition and Association are quite enough, Craig Larman told me so. It might not be the answer your instructor was looking for but it is unlikely to be implemented in … Read more
I moved from C++ to Java 6 years ago an used “Effective Java” by Bloch, this is a style book which explains in 50 short articles how best to use various java classes and techniques. This is very similar to “Effective C++” by Meyers and “Exceptional C++” by Sutter. If you already know C++ and … Read more
First of all I would like to tell you that React is based on Javascript which is obviously object oriented (but not exactly similar to languages such as Java, C++, and many other traditional Object Oriented languages ). React itself does not enforces any object oriented technique but React components are totally reusable. You can … Read more
Use this import blah from ‘./blaha’; export default class myclass{ constructor(con) { this.config = con; } async meth1(paramA) { //do_stuff… } meth2(paramB) { this.meth1() } }
AOP is OO; Aspects are objects. I don’t understand why the either/or mentality. AOP is the perfect choice for chained, cross-cutting concerns (e.g. logging, security, transactions, remote proxying, etc.) UPDATE: I think the criticisms offered by the OP are subjective and not as universally widespread as stated. Assertions stated without proof can be dismissed without … Read more
The C++11 Standard says (§10.1) [class.mi]: The order of derivation is not significant except as specified by the semantics of initialization by constructor (12.6.2), cleanup (12.4), and storage layout (9.2, 11.1). The three referenced paragraphs reveal that Constructors are called in the order you write them down (first base class in the list is constructed … Read more
abstract classes are not supported by actionscript 3. see http://joshblog.net/2007/08/19/enforcing-abstract-classes-at-runtime-in-actionscript-3/ the above reference also provides a kind of hackish workaround to create abstract classes in as3. Edit also see http://www.kirupa.com/forum/showpost.php?s=a765fcf791afe46c5cf4c26509925cf7&p=1892533&postcount=70 Edit 2 (In response to comment) Unfortunately, you’re stuck with the runtime error. One alternative would be to have a protected constructor…. except as3 doesn’t … Read more
The issues you are seeing aren’t caused by Domain Driven Design, but rather by a lack of separation of concerns. Domain Driven Design isn’t just about placing data and behavior together. The first thing I would recommend is taking a day or so and reading Domain Driven Design Quickly available as a free download from … Read more