constexpr lambda

28 avr 2015 · This proposal suggests allowing lambda-expressions in constant expressions It seems that constexpr lambdas aren't inherently wrong, so

1 nov 2015 · Wording for Constexpr Lambda Document #: P0170R0 the lambda-declarator to specify the function call operator (or template) as constexpr:

29 mai 2018 · The following example shows the compiler error arising when a forbidden feature is used in a constexpr lambda function Note that this code is 

8 mai 2018 · constexpr and inline Variables in Modern C++17 constexpr std::size_t a = 42; C++ Weekly - Ep 41 - C++17's constexpr Lambda Support

f = {k: partial(lambda x, k: x + k, k=k) for k in range(3)} 7 captures all variables ( used in the lambda) by reference → [=, &x]: lambdas are default constexpr

21 oct 2020 · C++17 allowed constexpr lambda functions ▷ C++20 still lacks: non-literal types , static storage; virtual base classes; goto statement; throw 

15 mai 2019 · Captureless Lambda and Function Pointer In combination with C++17's constexpr if we can have Lambdas with multiple return types 1 auto l 

variable templates, polymorphic lambdas, lambda captures expressions, new/ delete elision, relaxed restrictions on constexpr functions, binary literals, digit 

constexpr char tile_fixative[] = "grout"; // Object definition static_assert static constexpr char who[] = "Gabriel Dos Reis"; static_assert Can't use a lambda

some of the first items lambda calculus was used to address ○ if a sequence of constexpr can usually be deduced so this keyword is optional □ consteval