static-members

I have a single string constant that I have to re-use in several different XAML layouts, so instead of duplicating it, I'd like to just bind it to a constant. I have a class which defines the string in C#: public static class StringConstants { public static string MyString { get { return "SomeConstant"; } } } I'd like to be able to set the value through XAML via something like the following: <Label Content="{Binding local:StringConstants.MyString}"/> Is this achievable? I've searched for examples, but I've only found samples that involve some tinkering in the code-behind and I'm wondering if

I have the following class which I'm using as the base of all the models in my project: public abstract class BaseModel { static String table; static String idField = "id"; public static boolean exists(long id) throws Exception { Db db = Util.getDb(); Query q = db.query(); q.select( idField ).whereLong(idField, id).limit(1).get(table); return q.hasResults(); } //snip.. } I'm then trying to extend from it, in the following way: public class User extends BaseModel { static String table = "user"; //snip } However, if I try to do the following: if ( User.exists( 4 ) ) //do something Then, rather

Say you want to share some resource, like a class or a variable across all threads/sessions within a ASP.NET web application. What is better? 1) A static variable having thread-safe accessors to that static variable? 2) Or a ASP.NET application session variable? If you only have one of those, there is little difference. If you have several, you should use static variables rather than Application variables. The Application.Lock method will lock all Application variables, while you can use separate syncronisition identifiers for your static variables, so that each lock only affects the code that

We have two classifications heap and stack . When a object is created, memory for object is stored in heap. What if the class has static methods ,which can be called using class name. If object is not created then how will it allocate memory and if it does where will it allocate memory? It depends on the JVM, but static fields are usually stored in a special object on the heap. (You can see it in a heap dump) When the ClassLoader is unloaded, its classes and their static "objects"/fields are also cleaned up. The only thing different about the static "object" is you can't get a reference to it.

Is there any way to use the ECMAScript6 class notation to declare either a static class variable or a default value for an instance variable? Without class what I have in mind would be written as function MyClass(arg) { if(arg) this.arg = arg; } MyClass.classVariable = 42; MyClass.prototype.arg = "no arg specified"; The most obvious ES6-like notation in my opinion would have been class MyClass { constructor(arg) { if(arg) this.arg = arg; } static let classVariable = 42; let arg = "no arg specified"; } But this doesn't work, since according to the current spec draft the only productions of

What are static variables designed for? What's the difference between static int and int? The static keyword has four separate uses, only two of which are closely related: static at global and namespace scope (applied to both variables and functions) means internal linkage this is replaced by unnamed namespaces and is unrelated to the rest in particular, others tend to imply some sort of uniqueness, but internal linkage means the opposite : you can have many objects with the same name, as long as each has internal linkage and you only have one per translation unit static data members are