C++11 lambda表达式 实际上是lua的闭包方式

// lambda.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include "iostream"
using namespace std;
#include 
#include 
#include 
#include 

int _tmain(int argc, _TCHAR* argv[])
{
	//范例1
	auto func = []()
	{
		cout << "Hello, World!" << endl; 
	};
	func();// 调用函数输出Hello, World!

	//范例2
	std::vector c{ 1, 2, 3, 4, 5, 6, 7 };
	int x = 5;
	c.erase(std::remove_if(c.begin(), c.end(), [x](int n) { return n < x; }), c.end());

	std::cout << "c: ";
	for (auto i : c) {
		std::cout << i << ' ';
	}
	std::cout << '\n';

	// the type of a closure cannot be named, but can be inferred with auto
	auto func1 = [](int i) { return i + 4; };
	std::cout << "func1: " << func1(6) << '\n';

	// like all callable objects, closures can be captured in std::function
	// (this may incur unnecessary overhead)
	std::function func2 = [](int i) { return i + 4; };
	std::cout << "func2: " << func2(6) << '\n';

	return 0;
}

//打印结果
Hello, World!
c: 5 6 7
func1: 10
func2: 10
请按任意键继续. . .