sairate
c34823a3bd
- 新增现代 C++ 教程的 Preface 章节，包括英文和中文版本 - 添加 C++ Primer 练习代码 - 新增 Learn C++ 教程的 C++ 开发简介章节 - 添加头文件解析文档 - 更新 mkdocs.yml，包含新教程的目录结构 - 修改项目设置，使用 Python 3.10环境
38 lines
888 B
C++
38 lines
888 B
C++
//
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// 3.6.perfect.forward.cpp
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// modern c++ tutorial
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//
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// created by changkun at changkun.de
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// https://github.com/changkun/modern-cpp-tutorial
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//
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#include <iostream>
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#include <utility>
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void reference(int& v) {
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std::cout << "lvalue reference" << std::endl;
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}
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void reference(int&& v) {
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std::cout << "rvalue reference" << std::endl;
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}
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template <typename T>
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void pass(T&& v) {
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std::cout << " normal param passing: ";
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reference(v);
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std::cout << " std::move param passing: ";
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reference(std::move(v));
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std::cout << " std::forward param passing: ";
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reference(std::forward<T>(v));
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std::cout << "static_cast<T&&> param passing: ";
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reference(static_cast<T&&>(v));
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}
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int main() {
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std::cout << "rvalue pass:" << std::endl;
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pass(1);
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std::cout << "lvalue pass:" << std::endl;
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int l = 1;
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pass(l);
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return 0;
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}
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