Maybe 1.2

一个 C# 版本的 Maybe

Feature

=========================

• 基于 struct 实现，不存在 null 的可能
• 支持链式调用
• 支持捕获异常
• 支持 C# 8 的 switch 模式匹配

Api

========================

bool HasException { get; }
bool HasValue { get; }
Exception? InnerException { get; }
Maybe<T> Or(T obj);
Maybe<TOut> Then<TOut>(Func<T, TOut> func);
Maybe<TOut> ThenNoThrow<TOut>(Func<T, TOut> func) ;
Maybe<TResult> Then<TResult>(TryFunction<T, TResult> @try)
Maybe<TResult> ThenNoThrow<TResult>(TryFunction<T, TResult> @try)
MaybeResult Then<TOut>(Action<T> action);
MaybeResult ThenNoThrow(Action<T> action);
T Value { get; }

Install

dotnet add package Observer.Maybe 

or

Install-Package Observer.Maybe

Usage

Maybe<string> maybe = "123456";
var testObj = maybe.Then(s => s.Substring(0, 3));
var result = testObj switch
{
	(true, string value) => value,
	(false, _) => "None"
};

ChangeLog

1.0 2020-3-18

基本实现

1.1 2020-3-19

对 bool TryFunction<TIn, TResult>(TIn a, out TResult b) 的支持

1.2 2020-3-23

增进对 bool TryFunction<TIn, TResult>(TIn a, out TResult b) 的支持 Maybe变为readonly

License

MIT