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Modifiers for fields: const - Makes the field a constant. private - Makes the field private (default). protected - Makes the field protected. public - Makes the field public. readonly - Allows the field to be initialized only once in a constructor. static - Makes the field a static member, i.e. a class variable.
C++ uses the three modifiers called public, protected, and private. [3] C# has the modifiers public, protected,internal, private, protected internal, private protected, and file. [4] Java has public, package, protected, and private; package is the default, used if no other access modifier keyword is specified. The meaning of these modifiers may ...
In C#, the qualifier readonly has the same effect on data members that final does in Java and the const does in C++; the modifier const has an effect similar (yet typed and class-scoped) to that of #define in C++.
C# (/ ˌ s iː ˈ ʃ ɑːr p / see SHARP) [b] is a general-purpose high-level programming language supporting multiple paradigms.C# encompasses static typing, [16]: 4 strong typing, lexically scoped, imperative, declarative, functional, generic, [16]: 22 object-oriented (class-based), and component-oriented programming disciplines.
Much finer control of access rights can be defined using mutators and accessors. For example, a parameter may be made read-only simply by defining an accessor but not a mutator. The visibility of the two methods may be different; it is often useful for the accessor to be public while the mutator remains protected, package-private or internal.
The notion of a type qualifier was introduced, along with the example of readonly (later renamed const) by Bjarne Stroustrup in a Bell Labs internal Technical Memorandum of 1981, [5] and implemented in C with Classes, the predecessor to C++. [6] As to motivation, Stroustrup writes: [6]
In C#, class methods, indexers, properties and events can all be overridden. Non-virtual or static methods cannot be overridden. The overridden base method must be virtual, abstract, or override. In addition to the modifiers that are used for method overriding, C# allows the hiding of an inherited property or method.
In object-oriented programming, classes can contain attributes and methods. An attribute in a relational database can be represented as a column or field.. In computing, an attribute is a specification that defines a property of an object, element, or file.