this should be a quick one for all you f# rockers, but it's got me stuck at the moment.
I've got an F# type which I'm trying to get to implement a c# interface
public interface ICrudService<T> where T: DelEntity, new()
{
IEnumerable<T> GetAll();
}
here's how it's implemnted in c#:
public IEnumerable<T> GetAll()
{
return repo.GetAll();
}
repo.GetAll returns an IQueryable, but the c# compiler knows enough to convert to IEnumerable because IQueryable<T> : IEnumerable<T>. but In F# the compiler can't work it and I've tried a few attempt to cast it correctly
type CrudService<'T when 'T :(new : unit -> 'T) and 'T :> DelEntity>(repo : IRepo<'T>) =
interface ICrudService<'T> with
member this.GetAll () =
repo.GetAll<'T>
this is giving me a type mismatch error
You need to cast to IEnumerable<'T>:
type CrudService<'T when 'T :(new : unit -> 'T) and 'T :> DelEntity>(repo : IRepo<'T>) =
interface ICrudService<'T> with
member this.GetAll () =
repo.GetAll() :> IEnumerable<'T>
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