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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.
Generics, or parameterized types, or parametric polymorphism is a .NET 2.0 feature supported by C# and Visual Basic. Unlike C++ templates, .NET parameterized types are instantiated at runtime rather than by the compiler; hence they can be cross-language whereas C++ templates cannot.
This was designed so that any new generic collections should be passable to methods that expected one of the pre-existing collection classes. [80] C# generics were introduced into the language while preserving full backward compatibility, but did not preserve full migration compatibility: Old code (pre C# 2.0) runs unchanged on the new generics ...
C# 3.0 introduced type inference, allowing the type specifier of a variable declaration to be replaced by the keyword var, if its actual type can be statically determined from the initializer. This reduces repetition, especially for types with multiple generic type-parameters, and adheres more closely to the DRY principle.
On the other hand, C# has no primitive wrapper classes, but allows boxing of any value type, returning a generic Object reference. In Objective-C, any primitive value can be prefixed by a @ to make an NSNumber out of it (e.g. @123 or @(123)). This allows for adding them in any of the standard collections, such as an NSArray.
An authoring language is a programming language designed for use by a non-computer expert to easily create tutorials, websites, and other interactive computer programs. Darwin Information Typing Architecture (DITA) Lasso; PILOT; TUTOR; Authorware
The number of childfree women is at a record high: 48 percent of women between the ages of 18 and 44 don’t have kids, according to 2014 Census numbers. The Huffington Post and YouGov asked 124 women why they choose to be childfree.
OfType: converts a non-generic IEnumerable collection to one of IEnumerable<T>. Alternately converts a generic IEnumerable<T> to another generic IEnumerable<R> by attempting to cast each element from type T to type R. In both cases, only the subset of elements successfully cast to the target type are included. No exceptions are thrown.