54 lines
1.2 KiB
C#
54 lines
1.2 KiB
C#
using Sanchime.Functional.Products;
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using Sanchime.Functional.Extensions;
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using Sanchime.Toolkits;
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void foo(Option<int> option)
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{
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var res = option.Map(x => x + 2);
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res.WriteLine();
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}
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"预计打印Some(12)".WriteLine();
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foo(10);
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"预计打印None".WriteLine();
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foo(Option.None);
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"预计打印Char".WriteLine();
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Option.Some(1)
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.Map(x => (float)x + 1.2)
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.Map(x => x.ToString())
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.Map(x => x.GetType().Name)
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.ForEach(x => x.WriteLine());
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// 测试Option的Bind
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var parse = (string s) => Int32.TryParse(s, out int i) ? Option.Some(i) : Option.None;
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var foo1 = (string s) => s.Pipe(parse).Bind(Age.Of);
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foo1("111").WriteLine();
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foo1("aaa").WriteLine();
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foo1("123").WriteLine();
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// 管道
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foo1("1ab").Pipe(x => Console.WriteLine(x));
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public struct Age
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{
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private int _value;
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public static Option<Age> Of(int age)
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=> IsValid(age) ? Option.Some(new Age(age)) : Option.None;
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private Age(int age)
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{
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if (!IsValid(age))
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{
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throw new ArgumentException("输入的年龄是无效的");
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}
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_value = age;
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}
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private static bool IsValid(int age)
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=> age is (>= 0 and <= 150);
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public override string ToString()
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=> _value.ToString();
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}
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