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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++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.
C++17 is a version of the ISO/IEC 14882 ... Lambda expressions can capture "*this" by ... std::string_view, a read-only non-owning reference to a character ...
C++ C++11 closures can capture non-local variables by copy construction, by reference (without extending their lifetime), or by move construction (the variable lives as long as the closure does). The first option is safe if the closure is returned but requires a copy and cannot be used to modify the original variable (which might not exist any ...
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]
Capture by reference vs. capture by copy, extending the lifetime and garbage collection (compare C++) Implementation Luca Cardelli, Compiling a Functional Language. Simon Peyton Jones, Implementation of Functional Programming Languages. Z. Shao and A. W. Appel. Space-efficient closure representations.
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]
In C++11, a move constructor of std::vector<T> that takes an rvalue reference to an std::vector<T> can copy the pointer to the internal C-style array out of the rvalue into the new std::vector<T>, then set the pointer inside the rvalue to null. Since the temporary will never again be used, no code will try to access the null pointer, and ...