// 定义一个Calc委托类型, 计算a*b
//private delegate int Calc(int a, int b);
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
// 调用GetClosureFunction()返回一个Func<int,int> 再传入一个int参数.
// 那么即使在外部 GetClosureFunction里引用到的val值的空间不会被清除掉？
// val 作为一个局部变量。它的生命周期本应该在GetClosureFunction执行完毕后就结束了。为什么还会对之后的结果产生影响呢?
Console.WriteLine(GetClosureFunction()(30));
Console.WriteLine("Check here");
//// 这里本质还是Delegate.
//Action<int, string> eat = Eat;
//eat(5, "Apple");
//// 这样可以把eat指向不同的函数.
//// 从而可以不改变eat(5, "Apple")这种函数调用.
//Calc calc = calcMul;
//Func<int, int, int> calc = delegate (int x, int y)
// {
// return x * y;
// };
//Func<int, int, int> calc = (x, y) =>
//{
// return x * y;
//};
//Console.WriteLine(calc(10, 12));
}
//执行流程是Main函数调用GetClosureFunction函数，GetClosureFunction返回了委托internalAdd并被立即执行了
static void Main(string[] args)
{
Console.WriteLine(GetClosureFunction()(30));//打印60=30+30，会引用局部变量val的最终值30
int x = 5;
Console.WriteLine("x1= {0}", x);
outParaFunc(out x);
Console.WriteLine("x2= {0}", x);
Console.ReadKey();
}
static void Main(string[] args)
{
Console.WriteLine(GetClosureFunction()(30));
//Program program = new Program();
//// program.test(10);
//float f = -123.567F; int i = (int)f;
//Console.WriteLine(i);
//Console.WriteLine("Hello World!");
////short s1 = 1; s1 = s1 + 1;//错误
//short s1 = 1; s1 += 1;// 正确。
//MyIndexer<int, string> myIndexer = new MyIndexerImp<int, string>();
//myIndexer[0] = "1";
//myIndexer[2] = "2";
//myIndexer[3] = "3";
//Console.WriteLine(myIndexer[0]);
}
static void Main(string[] args)
{
Console.WriteLine(GetClosureFunction()(30));
Console.ReadKey();
}
static void Main(string[] args)
{
Console.WriteLine(GetClosureFunction()(30));//依次输出:20 40 60
}
