AngularJS supports 2 methods of registering controller functions – either as globally accessible functions (you can see this form in the mentioned tutorial) or as a part of a modules (that forms a kind of namespace). More info on modules can be found here: http://docs.angularjs.org/guide/module but in short one would register a controller in a … Read more
Encapsulation and information hiding are very closely linked concepts, though their precise definitions vary depending on who you talk to. The concept of “information hiding” was first described by Parnas (1972) who suggested that access to information should be restricted to reduce the interconnectedness of a system. He proposed that this would facilitate splitting of … Read more
I think a top reason for avoiding this is that it hides dependencies. Your functions get_data and run_html do not advertise in any way that they share data, and yet they do, in a big way. And there is no way (short of reading the code) to know that run_html will be useless if get_data … Read more
Private keyword The private keyword in TypeScript is a compile time annotation. It tells the compiler that a property should only be accessible inside that class: class PrivateKeywordClass { private value = 1; } const obj = new PrivateKeywordClass(); obj.value // compiler error: Property ‘value’ is private and only accessible within class ‘PrivateKeywordClass’. However compile … Read more
I don’t tend to think of it in terms of one object having access to another, but rather what code has access to what data within an object. In Java (and C#, btw) code within a class has access to the private members of any object of the same class. Then you’ve got package/assembly access … Read more
The default accessibility for a type is internal, but the default accesibility of that type’s members depends on the type. Generally speaking, members of a class are private by default, where as members of a struct are public by default. This varies by language; default struct access modifiers for C++ are public, where as for … Read more
I’m including an encapsulation hierarchy table of several of the GoF design patterns to help explain the differences between these two patterns. Hopefully it better illustrates what each encapsulates so my explanation makes more sense. First off, the hierarchy lists the scope for which a given pattern is applicable, or the appropriate pattern to use … Read more
Encapsulation hides variables or some implementation that may be changed so often in a class to prevent outsiders access it directly. They must access it via getter and setter methods. Abstraction is used to hide something too, but in a higher degree (class, interface). Clients who use an abstract class (or interface) do not care … Read more
I fear that either your description or your conception of Ownership Chaining is unclear, so let me start with that: “Ownership Chaining” simply refers to that fact that when executing a Stored Procedure (or View) on SQL Server, the currently executing batch temporarily acquires the rights/permissions of the sProc’s Owner (or the sProc’s schema’s Owner) … Read more
You have missed the point. The valid, important bit of that article is: Don’t ask for the information you need to do the work; ask the object that has the information to do the work for you. Java-style getter and setter proliferation are symptoms of ignoring this advice.