[swift-users] Looping through all values between UInt8.min and UInt8.max

Peter Vertes pvertes at gmail.com
Fri Apr 8 07:35:57 CDT 2016


You could cast the min and max values to an Int and iterate through the Int range:

let min = Int(UInt8.min)
let max = Int(UInt8.max)

for i in min...max {
    print(i)
}

While this will work it seems like a hack to me and Milos’ solution is more elegant…

-Pete


> On Apr 8, 2016, at 5:50 AM, tuuranton--- via swift-users <swift-users at swift.org> wrote:
> 
> I forgot to mention that I really would like to have i have type UInt8 within the loop. And since i is UInt8 it makes sense it should be able to take the values UInt8.min and UInt8.max (and all the values between).
> 
> 8. Apr 2016 11:48 by swift-users at swift.org <mailto:swift-users at swift.org>:
> 
> print(UInt8.min) //0
> 
> print(UInt8.max) //255
> 
> 
> 
> //Is there an easy way to loop between all values
> 
> //between (and including both) UInt8.min and UInt8.max?
> 
> 
> 
> //This doesn't work.
> 
> //Runtime crash because UInt8.max has no successor.
> 
> for i in UInt8.min...UInt8.max {
> 
>     print(i)
> 
> }
> 
> 
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