NN
NN
`async` is asynchronous method implementation detail. ``` public static bool IsAsyncOperation(MethodInfo method) { return AwaitAdapter.IsAwaitable(method.ReturnType) || method.GetCustomAttributes(false).Any(attr => attr.GetType().FullName == "System.Runtime.CompilerServices.AsyncStateMachineAttribute"); } ``` It is either awaitable or AsyncStateMachineAttribute. Isn't...
With C# 9 it can be written `a is > 5 and < 10` which doesn’t have ambiguity and allows to mix and match comparisons.
@cjdrake Can yyou merge this ?