Tasks with different result type in parallel

[schartyom]

If there any workaround to run tasks with different result type in parallel?
Task.whenAll([Task(1), Task("two")]) - This won't compile

[xxtesaxx]

Task.whenAll([Task(1 as AnyObject), Task("two" as AnyObject)]) at least compiles for me

[serejahh]

@schartyom you should have a look at PromiseKit. They support when with several different types: https://github.com/mxcl/PromiseKit/blob/master/Sources/when.swift#L95. With Bolts you can't do so

[schartyom]

I've created extension to make any task to be Task<Void>

extension Task {
    func emptyResultTask() -> Task<Void> {
        return continueWithTask { task -> Task<Void> in
            if let error = task.error {
                return Task<Void>(error: error)
            } else if task.cancelled {
                return Task<Void>.cancelledTask()
            } else {
                return Task.emptyTask()
            }
        }
    }
}

Now you can run any task in parallel: Task.whenAll([Task(1).emptyResultTask(), Task("two").emptyResultTask()])
Waiting for covariant generics in Swift :)

[serejahh]

It's a hack :) Usually it makes sense to get the exact results, not just notifying about finishing