sealed

Is the sealed command going to be in c++ 0x or is it only MS who use it? C++0x has a special identifier final which means the same as sealed for classes in C++/CLI. It prevents a class from being derived from. Read about sealed in Wikipedia So the answer is basically: it already is but under a different name and has a different syntax. sealed is a really .net term and so is specific to MS C++/CLI. Sealed is used to declare a .net class that cannot be derived from. It's available in C++ but on for .net types in MC++. 来源： https://stackoverflow.com/questions/7026462/is-the-sealed-command-c-0x-or

Should I seal all classes I know shouldn't ever be used as a base class even when there are no tangible performance or security concerns, or is this just adding cruft? A class which is extensible implements the feature that it can be extended -- that's a feature like any other feature of the class, and should be treated like one, no different from a method. All features should be thought through carefully to ensure that they meet the goals of the customer using the feature. Features need to be designed, implemented, reviewed for security problems, debugged, documented and maintained. All that

Anyone have any opinions on whether or not IEquatable<T> or IComparable<T> should generally require that T is sealed (if it's a class )? This question occurred to me since I'm writing a set of base classes intended to aid in the implementation of immutable classes. Part of the functionality which the base class is intended to provide is automatic implementation of equality comparisons (using the class's fields together with attributes which can be applied to fields to control equality comparisons). It should be pretty nice when I'm finished - I'm using expression trees to dynamically create a

How to stop the class to be inherited by other class. Nawaz C++11 solution In C++11, you can seal a class by using final keyword in the definition as: class A final //note final keyword is used after the class name { //... }; class B : public A //error - because class A is marked final (sealed). { // so A cannot be derived from. //... }; To know the other uses of final, see my answer here: What is the purpose of the "final" keyword in C++11 for functions? C++03 solution Bjarne Stroustrup's code : Can I stop people deriving from my class? class Usable; class Usable_lock { friend class Usable;