cppfront/mixed-function-expression-and-std-for-each.cpp at main · jnorthrup/cppfront · GitHub

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#include <vector>

#include <string>

#include <span>

#include <algorithm>

#include <iostream>

//=== Cpp2 type declarations ====================================================

#include "cpp2util.h"

#line 1 "regression-tests/mixed-function-expression-and-std-for-each.cpp2"

//=== Cpp2 type definitions and function declarations ===========================

#line 1 "regression-tests/mixed-function-expression-and-std-for-each.cpp2"

#line 7 "regression-tests/mixed-function-expression-and-std-for-each.cpp2"

[[nodiscard]] auto main() -> int;

//=== Cpp2 function definitions =================================================

#line 1 "regression-tests/mixed-function-expression-and-std-for-each.cpp2"

#line 7 "regression-tests/mixed-function-expression-and-std-for-each.cpp2"

[[nodiscard]] auto main() -> int{

std::vector<std::string> vec {

"hello", "2022"};

// Passing a function expression

std::ranges::for_each(

vec,

[](auto& x) -> decltype(auto) { return x += "-ish"; }

);

// Initializing from a function expression

auto callback {[](auto& x) -> decltype(auto) { return x += " maybe"; }};

std::ranges::for_each(

vec,

cpp2::move(callback)

);

for ( auto const& str : cpp2::move(vec) ) {

std::cout << str << "\n";

}

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