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In computer programming, an anonymous function (function literal, expression or block) is a function definition that is not bound to an identifier.Anonymous functions are often arguments being passed to higher-order functions or used for constructing the result of a higher-order function that needs to return a function. [1]
C++11 lambda functions capture variables declared in their outer scope by value-copy or by reference. This means that value members of a lambda cannot be move-only types. [13] C++14 allows captured members to be initialized with arbitrary expressions.
As of the 2011 revision, the C++ language also supports closures, which are a type of function object constructed automatically from a special language construct called lambda-expression. A C++ closure may capture its context either by storing copies of the accessed variables as members of the closure object or by reference.
C++17 is a version of the ISO/IEC 14882 standard for ... Lambda expressions can capture ... std::string_view, a read-only non-owning reference to a character sequence ...
C++23 is the name for the version of the ... basic_common_reference ... Allowed attributes on the function call operator of a lambda; std ...
C++20 is a version of the ISO/IEC 14882 standard for the C++ programming language. ... [=, this] as a lambda capture [14] template parameter lists on lambdas [15]
The Parallel Patterns Library is a Microsoft library designed for use by native C++ developers that provides features for multicore programming. [1] It was first bundled with Visual Studio 2010. It resembles the C++ Standard Library in style and works well with the C++11 language feature, lambdas, also introduced with Visual Studio 2010.
Conversely, an operator returning a reference type based on the lvalue-ness of the expression was deemed too confusing. The initial proposal to the C++ standards committee outlined a combination of the two variants; the operator would return a reference type only if the declared type of the expression included a reference.