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Added overload to switch method for use with async code. #106

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bwarthur
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Fixes #84.

I went with doing an overload of Switch instead of a separate SwitchAsync because I think it will provide a better default experience. As soon as someone adds async to each of the actions, it will switch over to the Func<> overload instead of relying on someone to know to go look for an explicitly named Async version.

@adnang
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adnang commented Apr 20, 2022

Will this result in IDE's highlighting that the Switch method is now async, and requires an await?

The problem i tried to highlight in the original issue wasn't with dicovery of the async method, but rather its usage - IMO, developers will still forget to call await on the method if its not explicit when there's a non-async overload.

Having an async overload without the Async suffix is quite unusual for stable .NET libraries, I think it will cause more confusion when the return type has changed to a Task without the method name changing.

This SO post has a similar belief https://stackoverflow.com/a/47810905

@mcintyre321 what do you think?

@@ -100,6 +104,18 @@ public void Switch({RangeJoined(", ", e => $"Action<T{e}> f{e}")})
throw new InvalidOperationException();
}}

#if !NET35
public Task Switch({RangeJoined(", ", e => $"Func<T{e}, Task> f{e}")})
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Rename this to SwitchAsync.

@@ -100,6 +104,18 @@ public void Switch({RangeJoined(", ", e => $"Action<T{e}> f{e}")})
throw new InvalidOperationException();
}}

#if !NET35
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@ChristopherHaws ChristopherHaws Dec 15, 2022

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This should probably be (!NETFRAMEWORK || NET40_OR_GREATER) instead of !NET35

@fbouvard
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Hi, would love to see this PR merged

@vflame
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vflame commented Jul 7, 2023

How does this compare to doing:

await oneOf.Match<Task>( t1 => Task.CompletedTask, t2 => Task.CompletedTask);

@fbouvard fbouvard mentioned this pull request Jan 23, 2024
@baynezy
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baynezy commented Feb 2, 2024

I badly need this. Any chance this happens?

@md-redwan-hossain
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Is this ever gonna merged?

@mcintyre321
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mcintyre321 commented Feb 29, 2024 via email

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Add a .SwitchAsync method which behaves as .Match returning a Task
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