Typing.Union 1.2.0

Type.Union

Union typing is only needed when you have a statically typed language, as you need to declare that an object can return one of multiple types (in your case an int or string , or in the other example string or null)

Example

using Typing;

namespace Example;
public class Program
{
 public static void Main(string[] args)
 {
 Print(5);
 Print("Hello");
 Print(new[] { "Hello", "World" });
 //Output:
 //5
 //Hello
 //Hello, World

 Console.WriteLine(GetStringLength(100));
 Console.WriteLine(GetStringLength("Hello"));
 Console.WriteLine(GetStringLength(new[] { "Hello", "World" }));
 //Output:
 //3
 //5
 //12
 }

 public static void Print(Union<int, string, string[]> printValue)
 => printValue.MatchAction(
 i => Console.WriteLine(i),
 s => Console.WriteLine(s),
 sa => Console.WriteLine(string.Join(", ", sa)));

 public static int GetStringLength(Union<int, string, string[]> value)
 => value.MatchFunc(
 i => i.ToString().Length,
 s => s.Length,
 sa => string.Join(", ", sa).Length);
}