Delay using DispatchTime.now() + float?

Question

What exactly is going on with DispatchTime.now()

How come I can\'t assign the time to wait as a variable?

And How Could I use a variable ?

Answer 1

The error message pretty much explains it. You can't add a float and a DispatchTime together as they are different data types.

When you use this line:

let when = DispatchTime.now() + 2.2 // <---- THIS IS OKAY

you don't specify what type the 2.2 is and the system concludes it is of type DispatchTime and allows it.

However when you use this line:

let whenWhen = DispatchTime.now() + time // <---- THIS IS NOT OKAY

you have already determined that time is a float and that's where the error is generated.

It's probably easiest to convert like this:

DispatchTimeInterval.milliseconds(Int(time * 1000))