Explain FUNCACTION and PREDICATE with real-time examples

Question

I want to know about FUNCACTION and PREDICATE with real-time examples. The example must be understand-able.

Catcher Wong · Answer

PREDICATE Valid a number is an odd. class Program { static void Main( string [] args) { Predicate int > predicate1 = IsOdd; Predicate int > predicate2 = x => { return x % 2 == 0; }; Console.WriteLine(predicate1.Invoke(20)); Console.WriteLine(predicate2(20)); Console.WriteLine(predicate1.Method.ToString()); Console.WriteLine(predicate2.Method.ToString()); Console.Read(); } static bool IsOdd( int num) { return num % 2 == 0; } } ACTION print elements of the list class Program { static void Main( string [] args) { Action int > action1 = new Action int >(Print); Action int > action2 = new Action int >(x => { Console.WriteLine(x); }); var list = new List int >() { 123}; list.ForEach(action1); Console.WriteLine( == ); list.ForEach(action1); Console.WriteLine( string .Format( the method to invoke of action1 is [{0}]  action1.Method.ToString())); Console.WriteLine( string .Format( the method to invoke of action2 is [{0}]  action2.Method.ToString())); Console.Read(); } static void Print( int x) { Console.WriteLine(x); } } FUNC Calculate the sum of two number class Program { static void Main( string [] args) { Func int  int  int > func1 = Add; Func int  int  int > func2 = (x y) => { return x + y; }; Console.WriteLine(func1(12)); Console.WriteLine(func2.Invoke(12)); Console.WriteLine(func1.Method.ToString()); Console.WriteLine(func2.Method.ToString()); Console.Read(); } static int Add( int num1 int num2) { return num1 + num2; } } Hope the examples can help you!

Explain FUNC,ACTION and PREDICATE with real-time examples