67 lines
1.5 KiB
C#
67 lines
1.5 KiB
C#
using Sanchime.Functional.Products;
|
|
using Sanchime.Functional.Extensions;
|
|
using Sanchime.Toolkits;
|
|
|
|
|
|
try
|
|
{
|
|
void foo(Option<int> option)
|
|
{
|
|
var res = option.Map(x => x + 2);
|
|
res.WriteLine();
|
|
}
|
|
|
|
"预计打印Some(12)".WriteLine();
|
|
foo(10);
|
|
"预计打印None".WriteLine();
|
|
foo(Optional.None);
|
|
|
|
"预计打印Some(String)".WriteLine();
|
|
Optional.Some(1)
|
|
.Map(x => x + 1.2)
|
|
.Map(x => x.ToString())
|
|
.Map(x => x.GetType().Name)
|
|
.WriteLine();
|
|
|
|
// 测试Option的Bind
|
|
var parse = (string s) => Int32.TryParse(s, out int i) ? Optional.Some(i) : Optional.None;
|
|
var foo1 = (string s) => s.Pipe(parse).Bind(Age.Of);
|
|
"预计打印Some(111)".WriteLine();
|
|
foo1("111").WriteLine();
|
|
"预计打印None".WriteLine();
|
|
foo1("aaa").WriteLine();
|
|
"预计打印Some(123)".WriteLine();
|
|
foo1("123").WriteLine();
|
|
// 管道
|
|
"预计打印None".WriteLine();
|
|
foo1("1ab").Pipe(x => x.WriteLine());
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
ex.Message.WriteLine();
|
|
ex.StackTrace.WriteLine();
|
|
}
|
|
|
|
public struct Age
|
|
{
|
|
private int _value;
|
|
|
|
public static Option<Age> Of(int age)
|
|
=> IsValid(age) ? Optional.Some(new Age(age)) : Optional.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();
|
|
}
|