The non-generic type 'Maybe' cannot be used with type arguments

asyncpro · February 2015

public static class Maybe
{
   public static Maybe<T> ToMaybe<T>(this T value)
   {
       return new Maybe<T>(value);
   }

   public static Maybe<T> Empty<T>()
   {
       return new Maybe<T>();
   }
}

yields 'The non-generic type 'Maybe' cannot be used with type arguments' even though System.Collections.Generic is referenced in Query Properties. What am I doing wrong ? Implementation of Maybe has been omitted - it works.

JoeAlbahari · February 2015

I suspect that you need to force LINQPad to define both as top-level types. Add the following to the start of your query:

#define NONEST

asyncpro · February 2015

That works. Thanks.

The non-generic type 'Maybe' cannot be used with type arguments

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