internal void METHEXT_String_WordCount()
{
string str = ui.Input("Text", new string[] { "ja nee", "aap noot mies" });
int i = str.WordCount();
ui.Output("Aantal woorden: " + i);
}
internal void LINQ_Aggregate()
{
const string CHOICE_NAME = "n";
const string CHOICE_SUM = "s";
const string CHOICE_AVG = "a";
string[] choices = new string[] { CHOICE_NAME, CHOICE_SUM, CHOICE_AVG };
string choice = ui.Input("Choose: " +
$"{CHOICE_NAME} (longest Name), " +
$"{CHOICE_SUM} (Sum) or " +
$"{CHOICE_AVG} (Average):", choices);
switch (choice)
{
case CHOICE_NAME:
string longestName = Aggregate1();
ui.Output($"The longest name is {longestName}", "Result");
break;
case CHOICE_SUM:
int[] i = { 1, 2, 3, 4 };
ui.Output($"Sum: {i.Aggregate(0, (result, nextItem) => result + nextItem)}", "Result");
break;
case CHOICE_AVG:
IEnumerable <int> numbers = new List <int> {
6, 2, -1, 8, 3
}.Where(n => n > 0);
decimal d = numbers.Aggregate(0, (result, nextItem) => result + nextItem, result => (decimal)result / numbers.Count());
var numbersAsText = numbers.Select(n => n.ToString()).Aggregate("", (result, nextItem) => result + ", " + nextItem);
ui.Output(String.Format("Average of [{0}] is {1}", numbersAsText, d), "Result");
break;
default:
ui.Output("Invalid option", Helper.Constant.APP_NAME);
break;
}
}