测试了Option的一些操作

Sanchime.Test/Program.cs

@@ -8,12 +8,43 @@ using Sanchime.Toolkits;
 
 // Console.WriteLine(test.Value);
 
-foo(10);
-foo(Option.None);
+// foo(10);
+// foo(Option.None);
 
-void foo(Option<int> option)
+// void foo(Option<int> option)
+// {
+//     var res = option.Map(x => x + 2);
+//     res.WriteLine();
+// }
+
+// 测试Option的Bind
+var parse = (string s) => Int32.TryParse(s, out int i) ? Option.Some(i) : Option.None;
+var foo = (string s) => s.Pipe(parse).Bind(Age.Of);
+
+foo("111").WriteLine();
+foo("aaa").WriteLine();
+foo("123").WriteLine();
+// 管道
+foo("1ab").Pipe(x => Console.WriteLine(x));
+public struct Age
 {
-    var res = option.Map(x => x + 2);
-    res.WriteLine();
+    private int _value;
+
+    public static Option<Age> Of(int age)
+        => IsValid(age) ? Option.Some(new Age(age)) : Option.None;
+
+    private Age(int age)
+    {
+        if (!IsValid(age))
+        {
+            throw new ArgumentException("输入的年龄是无效的");
+        }
+        _value = age;
     } 
 
+    private static bool IsValid(int age)
+        => age is (>= 0 and <= 150);
+
+    public override string ToString()
+        => _value.ToString();
+}