Delegate examples

DelegateExamples.cs

void Main()
{
	Process();
}

delegate double MathAction(double num);

private static void Process()
{
	//--DELEGATE - COMMON--INITIAL
	MathAction square = delegate(double input)
    	{
		return input * input;
    	};
	Console.WriteLine("square: {0}", square(5));
	//--DELEGATE - COMMON--FINAL

	//--DELEGATE - PREDICATE--INITIAL
	Predicate<string> p1 = obj => obj.Length > 2;
	Console.WriteLine(p1("Vasconcellos"));
		
	Predicate<string> p2 = delegate(string obj) { return obj.Length > 2; };
	Console.WriteLine(p2("Vasconcellos"));
	
	Predicate<int> pBiggerThan1991 = x => x > 1991;
	int[] numbers = { 1990, 1991, 1992, 1993, 1994 };
	int number = Array.Find(numbers, pBiggerThan1991);
	Console.WriteLine(number);
	//--DELEGATE - PREDICATE--FINAL
	
	//--DELEGATE - ACTION--INITIAL
	Action<string>[] actions = new Action<string>[] 
	{ 
		Console.WriteLine, 
		delegate(string message){ Console.WriteLine($"Function Print: {message}"); } 
	};
	var automobiles = new[] { "bus", "car", "airplane" };	
	Array.ForEach(actions, x => Array.ForEach(automobiles, x));
	//--DELEGATE - ACTION--FINAL
		
	//--DELEGATE - FUNC--INITIAL
	Func<List<long>, int, bool> funcBiggerThan = (values, value) =>
	{
		foreach(var x in values) 
		{
			if(x > value){ values.Remove(x); return true; }
			else{ values.Remove(x); return false; }
		}	
		return false;
	};
	
	List<long> listInt64 = new List<long> { 0, 1, 2, 3, 4, 5, 6, 7};
	
	var select = from value in new List<long>() { 0, 1, 2, 3, 4, 5, 6, 7} 
				where funcBiggerThan(listInt64, 2) 
				select value;
				
	Console.WriteLine(select);
	//--DELEGATE - FUNC--FINAL
}