Comment by jerf

    import github.com/carlmjohnson/flowmatic

    func whatever(ctx context.Context) {
        err := flowmatic.Race(ctx, taskA, taskB)
    }

Provide your definition of taskA and taskB, of course.

As I said in another message, this is not a particularly fruitful line of attack in either direction. All the languages in question are perfectly capable of abstractions.