If I have a variable inside a function (say, a large array), does it make sense to declare it both static and constexpr? constexpr guarantees that the array is created at compile time, so would the static be useless? void f() { static constexpr int x [] = { // a few thousand elements }; … Read more
In Java, static final variables are constants and the convention is that they should be in upper-case. However, I have seen that most people declare loggers in lower-case which comes up as a violation in PMD. e.g: private static final Logger logger = Logger.getLogger(MyClass.class); Just search googleor SO for “static final logger” and you will … Read more
The keyword static is one which has several meanings in C++ that I find very confusing and I can never bend my mind around how its actually supposed to work. From what I understand there is static storage duration, which means that it lasts for the lifetime of the program in the case of a … Read more
public class EnumRouteConstraint<T> : IRouteConstraint where T : struct { private static readonly Lazy<HashSet<string>> _enumNames; // <– static EnumRouteConstraint() { if (!typeof(T).IsEnum) { throw new ArgumentException( Resources.Error.EnumRouteConstraint.FormatWith(typeof(T).FullName)); } string[] names = Enum.GetNames(typeof(T)); _enumNames = new Lazy<HashSet<string>>(() => new HashSet<string> ( names.Select(name => name), StringComparer.InvariantCultureIgnoreCase )); } public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary … Read more
How can one get the name of the class from a static method in that class. For example public class MyClass { public static String getClassName() { String name = ????; // what goes here so the string “MyClass” is returned return name; } } To put it in context, I actually want to return … Read more
Is it correct to say that static means one copy of the value for all objects and volatile means one copy of the value for all threads? Anyway a static variable value is also going to be one value for all threads, then why should we go for volatile? 8 Answers 8
As far as I understood the “static initialization block” is used to set values of static field if it cannot be done in one line. But I do not understand why we need a special block for that. For example we declare a field as static (without a value assignment). And then write several lines … Read more
I read a few threads here about static methods, and I think I understand the problems misuse/excessive use of static methods can cause. But I didn’t really get to the bottom of why it is hard to mock static methods. I know other mocking frameworks, like PowerMock, can do that but why can’t Mockito? I … Read more
How do you create a static class in C++? I should be able to do something like: cout << “bit 5 is ” << BitParser::getBitAt(buffer, 5) << endl; Assuming I created the BitParser class. What would the BitParser class definition look like? 15 Answers 15
In Java, what’s the difference between: private final static int NUMBER = 10; and private final int NUMBER = 10; Both are private and final, the difference is the static attribute. What’s better? And why? 22 Answers 22
