2020-06-16a

08 DelegateAnwendungen/Program.cs

 using System;
+using System.Collections.Generic;
 
 namespace _08_DelegateAnwendungen
 {
@@ -9,14 +10,30 @@ namespace _08_DelegateAnwendungen
         static T[] ApplyAll<T>(MeineFkt<T> fkt, params T[] werte)
         {
             T[] erg = new T[werte.Length];
+            Console.Write("APPLY ALL: ");
             for (int i = 0; i < werte.Length; i++)
             {
                 erg[i] = fkt(werte[i]);
-                Console.Write (erg[i]); Console.Write("  ");
+                Console.Write ($"{erg[i]}  "); 
             }
             Console.WriteLine();
             return erg;
         }
+        static T[] Select<T>(Predicate<T> filter, params T[] werte)
+        {
+            Console.Write("SELECT: ");
+            List<T> erg = new List<T>();
+            foreach (var item in werte)
+            {
+                if (filter(item))
+                {
+                    erg.Add(item);
+                    Console.Write($"{item}  ");
+                }
+            }
+            Console.WriteLine();
+            return erg.ToArray();
+        }
         static int Quadrieren(int x) => x * x;
 
         static void Main(string[] args)
@@ -29,6 +46,10 @@ namespace _08_DelegateAnwendungen
 
             string[] namen = { "Anton", "Berta", "Claudia", "Emil", "Dieter" };
             ApplyAll(x => x.ToUpper(), namen);
+            Console.WriteLine("----------");
+            Select (x => x.Contains("E"), ApplyAll(x => x.ToUpper(), namen));
+            Console.WriteLine("----------");
+            Select(x => x > 100, ApplyAll(x => x * 2, 10, 30, 40, 50, 60, 70, 80, 100));
         }
     }
 }

08 DelegateAnwendungen/obj/Debug/netcoreapp3.1/08 DelegateAnwendungen.csproj.FileListAbsolute.txt

@@ -10,3 +10,4 @@ C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08 DelegateAnwendungen\obj\De
 C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08 DelegateAnwendungen\obj\Debug\netcoreapp3.1\08 DelegateAnwendungen.dll
 C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08 DelegateAnwendungen\obj\Debug\netcoreapp3.1\08 DelegateAnwendungen.pdb
 C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08 DelegateAnwendungen\obj\Debug\netcoreapp3.1\08 DelegateAnwendungen.genruntimeconfig.cache
+C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08 DelegateAnwendungen\obj\Debug\netcoreapp3.1\08 DelegateAnwendungen.csprojAssemblyReference.cache

08Button/obj/Debug/netcoreapp3.1/08Button.csproj.FileListAbsolute.txt

@@ -10,3 +10,4 @@ C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08Button\obj\Debug\netcoreapp
 C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08Button\obj\Debug\netcoreapp3.1\08Button.dll
 C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08Button\obj\Debug\netcoreapp3.1\08Button.pdb
 C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08Button\obj\Debug\netcoreapp3.1\08Button.genruntimeconfig.cache
+C:\Users\wienkop\source\repos\prog2-ss2020-wienkop\08Button\obj\Debug\netcoreapp3.1\08Button.csprojAssemblyReference.cache