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Generic type overload resolution from multiple assemblies
f#

Hi -

I may be missing something obvious here, but I've been stuck on this for a while now. My project uses the System.Action<T> delegate, which is defined in mscorlib.dll, and everything works fine.

Now, in another place in the project, I need something from System.Core.dll. This assembly also defines a non-generic System.Action type (no type arguments) that I *don't* need to use.

When I add the reference to System.Core, though, all my uses of System.Action<T> break, saying "The type 'System.Action' expects 0 type argument(s) but is given 1."

Any advice would be greatly appreciate - I'm pretty stumped.

Thanks,

Daniel

.

Hi Daniel,

There is a known issue in the CTP with name resolution for generic types from multiple assemblies. In practice this hits System.Action and System.Func

The workaround for System.Action is as follows:

  • open System
  • For the 1-argument type, use "Action<int>(...)"
  • For the 2+ argument types, use "System.Action<int,int>(...)"

I know that's a bit screwy. We'll address this issue in any update to the CTP and the code will continue to work.

Thanks

Don

By on 9/11/2008 10:07 AM ()

Great - glad you guys know about the issue and that there's a sort-of simple workaround that allows me to move ahead. Thanks, Don!

By on 9/11/2008 10:12 AM ()

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