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For example, LINQ to Objects works on IEnumerable<T>s and with delegates, whereas LINQ to SQL makes use of the expression trees. The expression trees are at the core of the LINQ extensibility mechanism, by which LINQ can be adapted for many data sources.
LINQ is a new Microsoft-specific extensible, general-purpose query language for many kinds of data sources—including plain object collections, XML documents, databases, etc.—which is tightly integrated with other C# language facilities. The syntax is different from, but borrows from SQL. An example:
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.
C#s Language Integrated Query (LINQ) is a set of features designed to work together to allow in-language querying abilities and is a distinguishing feature between C# and Java. LINQ consists of these features: Extension methods allow existing interfaces or classes to be extended with new methods.
The term "fluent interface" was coined in late 2005, though this overall style of interface dates to the invention of method cascading in Smalltalk in the 1970s, and numerous examples in the 1980s. A common example is the iostream library in C++ , which uses the << or >> operators for the message passing, sending multiple data to the same ...
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.
Anonymous types are a feature of C# 3.0, Visual Basic .NET 9.0, Oxygene, Scala and Go that allows data types to encapsulate a set of properties into a single object without having to first explicitly define a type. [1] This is an important feature for the SQL-like LINQ feature that is integrated into C# and VB
LINQPad is a software utility targeted at .NET Framework and .NET Core development. It is used to interactively query SQL databases (among other data sources such as OData or WCF Data Services) using LINQ, as well as interactively writing C# code without the need for an IDE.