随笔分类 - cpp
摘要：future对象通过以下方式获得 async promise::get_future packaged_task::get_future
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摘要：类似于std::function，它会把结果自动到转移到future对象 int countdown (int from, int to) { for (int i=from; i!=to; --i) { std::cout << i << '\n'; std::this_thread::sleep
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摘要：std::function<int(int,int)> foo,bar;用函数类型初始化模板参数
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摘要：double my_divide (double x, double y) {return x/y;} int main () { using namespace std::placeholders; // adds visibility of _1, _2, _3,... // binding f
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摘要：Returns an rvalue reference to arg if arg is not an lvalue reference. If arg is an lvalue reference, the function returns arg without modifying its ty
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