Swift question mark

Question

I'm still confused about the ? in swift . I even googled what it means but I still don't understand it. Can someone please help me?

Answer 1

Thanks ChillPill

Answer 2

Thank you bendjebbar

Answer 3

//You can also use it (?) like this exemple :

let x = 10 // while x < 20 , i take value of i else i take value of 2*x
var i = x<20 ? x : 2*x

Answer 4

This operator is available in many languages, not just Swift.