arc4random_uniform float value

Asked May 28 '16 at 17:42

Active May 28 '16 at 18:03

Viewed 78 times

My question is pretty basic: how can I make arc4random_uniform return a random value between 1.75 and 2.25?

This code below is only returning me Int values.

import SpriteKit

let duration = CGFloat((arc4random_uniform(50)+175)/100) //random between 1.75 and 2.25 attempt

print("Duration:", duration)

If you want, you can download the playground file here.

Thanks in advance,
Luiz.

edited May 28 '16 at 18:03

asked May 28 '16 at 17:42

Luiz

Code not tested: `let duration: CGFloat = (CGFloat(arc4random_uniform(51)) + 175.0) / 100.0`. – Robotic Cat May 28 '16 at 17:48
It worked pretty well!! Thank you!! – Luiz May 28 '16 at 18:03
By the way, why did you randomize 51, instead of 50? – Luiz May 28 '16 at 18:03
Because `arc4random_uniform(N)` returns a number between `0` and `N-1`. So to get a number between `0` and `50` you need `arc4random_uniform(51)`. – Robotic Cat May 28 '16 at 18:12
Oh! I didn't know about the `N-1`!! Thank you again!! – Luiz May 28 '16 at 18:15

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