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C# 4.0 is a version of the C# programming language that was released on April 11, 2010. Microsoft released the 4.0 runtime and development environment Visual Studio 2010. [1] The major focus of C# 4.0 is interoperability with partially or fully dynamically typed languages and frameworks, such as the Dynamic Language Runtime and COM.
Like C#, Visual Basic can access objects from dynamic languages built on the DLR such as IronPython and IronRuby. [14] [15] PowerShell 3.0, released in Windows 8, was updated to use the DLR. [16] IronScheme, a Scheme implementation, [17] was planning to build upon the DLR.
Type dynamic is a feature that enables dynamic runtime lookup to C# in a static manner. Dynamic denotes a variable with an object with a type that is resolved at runtime, as opposed to compile-time, as normally is done.
In languages that support polymorphism and type casting, the typeof operator may have one of two distinct meanings when applied to an object. In some languages, such as Visual Basic, [1] the typeof operator returns the dynamic type of the object. That is, it returns the true, original type of the object, irrespective of any type casting.
A type or object system can typically be modified during runtime in a dynamic language. This can mean generating new objects from a runtime definition or based on mixins of existing types or objects.
In object-oriented programming, the decorator pattern is a design pattern that allows behavior to be added to an individual object, dynamically, without affecting the behavior of other instances of the same class. [1]
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.
COM components and interoperability was more powerful in VB.NET, as the Object type is bound at runtime; [14] however, C# 4.0 added the dynamic type, which functions as a late-bound form of Object Namespaces can be imported at the project level, so that they don't have to be imported into each individual file, as in C#