static void Main(string[] args)
{
LambdaTest sqr = (x, y) => x * y;
//Console.WriteLine(sqr(2,4)); // 100
//Action<int> action = (a) => Console.WriteLine(a * a);
//action(10); // 100
((Action <int>)((a) => Console.WriteLine(a * a)))(10);
Predicate <int> predicate = (a) =>
{
return(a == 2);
};
//Console.WriteLine(predicate(4));
//Func<int, int, int> func = (a, b) => a * b;
//Console.WriteLine(func(4,4));
//Anonymous function
Console.WriteLine(((Func <int, int, int>)((a, b) => {
return(a * b);
}))(20, 20));
Calculator calculator = new Calculator();
calculator.Minus(2, 1);
int i = 10;
Console.WriteLine(i.IsGreaterThan(100));
DelelegateTesting delelegateTesting = new DelelegateTesting();
delelegateTesting.LongRunningFunction(CallBack);
Console.ReadLine();
void CallBack()
{
Console.WriteLine("I am Finished now !");
}
}
static void Main(string[] args)
{
LambdaTest.CreateList();
Console.Write(LambdaTest.GetHeader());
Console.WriteLine($"{Environment.NewLine}First test finalized on {DateTime.Now.ToShortTimeString()} {Environment.NewLine}" +
$"RESULT> {Environment.NewLine}{LambdaTest.LambdaDirectCall()}");
Console.WriteLine($"{Environment.NewLine}Second test finalized on {DateTime.Now.ToShortTimeString()} {Environment.NewLine}" +
$"RESULT> {Environment.NewLine}{LambdaTest.LambdaCompiledCache()}");
//Console.WriteLine($"{Environment.NewLine}Third test finalized on {DateTime.Now.ToShortTimeString()} {Environment.NewLine}" +
// $"RESULT> {Environment.NewLine}{LambdaTest.LambdaCompiled()}");
Console.WriteLine($"{Environment.NewLine}Four test finalized on {DateTime.Now.ToShortTimeString()} {Environment.NewLine}" +
$"RESULT> {Environment.NewLine}{LambdaTest.LambdaGeneratedCache()}");
Console.WriteLine($"{Environment.NewLine}Fifth test finalized on {DateTime.Now.ToShortTimeString()} {Environment.NewLine}" +
$"RESULT> {Environment.NewLine}{LambdaTest.LambdaGenerated()}");
Console.ReadKey();
}
static void Main(string[] args)
{
/*
* Review delegate
* Lambda
* yield
*/
// Create delegate object
// DelegateAction parameter: intellisense "void () target", what is mean?
// 교과서적인 문법
DelegateAction da = new DelegateAction(DelegateActionMethod);
da.Invoke();
DelegateAction da2 = DelegateActionMethod;
da2();
DelegateAction3 da10 = new DelegateAction3(DelegateActionMethod10);
int returnValue = da10(10, "apple");
DelegateActionMethod();
Test test = new Test();
Test.DelegateAction delegateAction = new Test.DelegateAction(DelegateActionMethod);
test.SetDelegate(delegateAction);
Store s = new Store();
Customer c = new Customer();
s.PayEvent1 = c.Pay;
// event의 정체: delegate type으로 동작하는 특수한 기능
//Button button = new Button();
//button.Click += Button_Click;
// Lambda
DelegateAction da3 = () => Console.WriteLine("Called da2 delegate variable.");
// delegate를 표현하는 문법
LambdaTest lambda = () => { };
// parameter 하나를 받는 표현은 () 생략이 가능, 구현부분도 1줄이면 {} 생략 가능
LambdaTest2 lambda2 = value => value = 1;
// 평소에 봤던 lambda들...
List <int> list = new List <int>();
int findItem = list.Find(obj => obj == 10);
var result = list.Where(obj => obj > 10);
foreach (var item in list)
{
}
// yield
foreach (var item in GetNames)
{
if (item != null)
{
Console.WriteLine("AOA member: " + item);
}
}
#region 요청 리뷰
// 1. LINQ
// 2. Design pattern: Factory, Starategy
#endregion
}
