B&b)->task<void>{std::cout<<"XB "<<x.x+b.b<<"\n";};// coroutineautocoroutine_example=[&]()->task<void>{Xx;{Aa;co_awaitco_g(x,a);}// a,~A(){Bb;co_awaitco_f(x,b);}// b.~B()};// x.~X() 很明显,使用future写的协程如果要保证各个资
声明后可以看到函数名是红色,报错,将鼠标放在函数名上,点击“create jni function for ×××”,然后选择在native-lib.cpp中创建,系统会自动为我们创建函数的标准jni接口。注意jni接口函数的命名有严格的规范,必须是:包名_类名_函数名(参数)的格式,如果不是,则调用时会找不到函数接口。 extern "C" JNIEXPORT ji...
// Tuple index, return type different, so template function is used Tuple<int, double, char>(1, 2.5, 'A').get<2>(); // 'A' // take the remaining part of the Tuple, the underlying layer is pointer conversion, which is very fast Tuple<int, double, char>(1, 2.5, 'A').rest(...
文件内使用的函数,不对外使用的,一般使用 static <return type> _xxx(...) { ... } 来命名。 变量:类内变量成员,m开头;其它变量,尽量遵循驼峰命名法;bool 类型的可以使用 is 开头;指针类型的可以用 ptr 结尾;回调函数变量可以以 cb 结尾;设置回调函数以 onChange 等标明;等等。 宏:全大...
)endfunction() Format函数接受两个参数:target和directory。它将在目标构建之前格式化来自该目录的所有源文件。 从技术角度来看,目录中的所有文件不必都属于目标,目标的源文件可能分布在多个目录中。然而,追踪与目标相关的所有源文件和头文件是复杂的,特别是在需要排除外部库的头文件时。在这种情况下,聚焦于目录比聚焦...
call to a function object std::function<void(int)> f_display_obj = PrintNum(); f_display_obj(18); auto factorial = [](int n) { // store a lambda object to emulate "recursive lambda"; aware of extra overhead std::function<int(int)> fac = [&](int n) { return (n < 2) ?
std::function<const int&()> F([] { return 42; }); // Error since C++23: can't bind // the returned reference to a temporary int x = F(); // Undefined behavior until C++23: the result of F() is a dangling reference std::function<int&()> G([]() -> int& { static int...
magic_get - std::tuple like methods for user defined types without any macro or boilerplate code. [Boost] meta - Header-only, non-intrusive and macro-free runtime reflection system in C++. [MIT] Nameof - Header-only C++17 library provides nameof macros and functions to obtain the simple ...
std::tuple<int,int>foo_tuple(){return{1,-1};// Error until N4387returnstd::tuple<int,int>{1,-1};// Always worksreturnstd::make_tuple(1,-1);// Always works} Example Run this code #include <iostream>#include <stdexcept>#include <string>#include <tuple>std::tuple<double,char,std...
First lets write a helper function that pretty-prints interesting particle information. HepMC3::Print does provide pretty print functions, but they're a bit verbose. std::string PartToStr(HepMC3::ConstGenParticlePtr pt) { if (!pt) { return "PARTICLE-NOTFOUND"; } std::stringstream ss; std...