Add or else methods to option closes #31 #47
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ax0l0tl
reviewed
Jan 31, 2025
| @@ -79,6 +84,16 @@ public async Task<TResult> Match<TResult>(Func<T, Task<TResult>> some, Func<Task | |||
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| return await none().ConfigureAwait(false); | |||
| } | |||
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Is this actually a breaking change? -> GetValueOrDefault...
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You mean the match? In certain cases, as seen in GetValueOrDefault, it breaks the C# type inference.
park-jasper
reviewed
Feb 20, 2025
| @@ -181,22 +193,46 @@ public static async Task<Option<TOut>> Bind<T, TOut>(this Task<Option<T>> bind, | |||
| var result = await bind.ConfigureAwait(false); | |||
| return await result.Bind(convert).ConfigureAwait(false); | |||
| } | |||
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| public static async Task<Option<T>> OrElse<T>(this Task<Option<T>> option, Option<T> other) | |||
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This is one I have implemented by hand in some projects as well.
Other names we had in mind were .Chain, so like you are chaining the options and take the first one that contains some, or .FallbackTo but .OrElse also sounds good
| ShouldBeSome42(await none.OrElse(() => Task.FromResult(Some(42)))); | ||
| return; | ||
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| void ShouldBeSome42(Option<int> option) => option.Should().BeSome().Subject.Should().Be(42); |
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.BeSome() returns an AndWithConstraint<...>, so you can say
Suggested change
| void ShouldBeSome42(Option<int> option) => option.Should().BeSome().Subject.Should().Be(42); | |
| void ShouldBeSome42(Option<int> option) => option.Should().BeSome().Which.Should().Be(42); |
and use .Which
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