Restore feature to tell people when a lambda is unnecessary. #58875
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src/Workspaces/SharedUtilitiesAndExtensions/Compiler/CSharp/CodeStyle/CSharpCodeStyleOptions.cs
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…/CSharpRemoveUnnecessaryLambdaExpressionDiagnosticAnalyzer.cs Co-authored-by: Youssef Victor <[email protected]>
Co-authored-by: Youssef Victor <[email protected]>
…slyn into simplifyLambda
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…on/CSharpRemoveUnnecessaryLambdaExpressionDiagnosticAnalyzer.cs Co-authored-by: David Wengier <[email protected]>
…slyn into simplifyLambda
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Fixes #40364
Looks like this:
Note the faded sections in the lambda. Invoking the fix gives you:
We used to have this feature, but had to disable it because this 'fix' could make performance worse due to the compiler no longer caching this delegate in the case of some static call. However, now that #58288 has gone in, the compiler will still cache these method group conversions if you are on C#11 or above.
This allows us to reenable the feature.
--
Note: this feature can be entirely disabled by suppressing this diagnostic ID. in that case no messages or fading will occur :)
todo:
Relates to test plan #52192