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int&& f(); auto x3a = i; // decltype(x3a) is int decltype(i) x3d = i; // decltype(x3d) is int auto x4a = (i); // decltype(x4a) is int decltype((i)) x4d...

In the C++ programming language, decltype (for "declared type") is a specifier keyword used to query the type of an expression. Introduced in C++11, its...

type is inferred (e.g. operator auto(), operator decltype(auto)() etc.). The type name can also be inferred (e.g new auto) if an initializer is provided...

like so: auto fix = [](auto f) { return [f](auto&&... args) -> decltype(auto) { return f(f, std::forward<decltype(args)>(args)...); }; }; auto factorial...

that [](auto&&... args) is equivalent to []<template... Args>(Args&&... args)): auto fix = [](auto f) { return [f](auto&&... args) -> decltype(auto) { return...

parameters are in scope: template <typename L, typename R> auto add(const L& lhs, const R& rhs) -> decltype(lhs + rhs) { return lhs + rhs; } Language enhancements...

type V distinct from T and U template <typename T, typename U> auto add(T t, U u) -> decltype(t + u) { return t + u; } The ^^ reflection operator, introduced...

0; // c has type int auto d = c; // d has type int decltype(c) e; // e has type int, the type of the entity named by c decltype((c)) f = c; // f has type...

int& RrefInt&& r5 = 5; // r5 has the type int&& decltype(r2)& r6 = i; // r6 has the type int& decltype(r2)&& r7 = i; // r7 has the type int& A non-static...

0f; }; auto f1 = [](double x) -> double { return x; }; decltype(f0) fa[3] = {f0, f1, [](double x) -> double { return x * x; }}; vector<decltype(f0)> fv...

type of either a type or an expression. In C++, the equivalent feature is decltype. C++ adds numerous additional keywords to support its new features. This...

a try-finally block. C++ and C from C23 onwards allow auto x = expr as a shorthand for decltype(expr) x = expr in C++ or typeof(expr) x = expr in C. Python...

constinit const_cast continue contract_assert co_await co_return co_yield decltype default do double dynamic_cast else enum explicit export extern float for...

mainly consists of six compiler features: lambdas, rvalue references, auto, decltype, static_assert, and nullptr. C++11 also supports library features (e...

while in C++, lambdas have a real runtime class which can be accessed with decltype and are part of the language model. Java lambdas depend on the functional...

depended upon, whereas in C++ the lambda type may still be extracted with decltype to obtain a real unique closure type; a lambda's java.lang.Class<?> cannot...