How can I change values inside array without a loop Swift

Question

I have a bool array

For example:

 var myBool: [Bool] = [true, true, false, true ,false]

and I want to change all the elements from inde

Answer 1

Any mutable collection responds to replaceSubrange:with:

var myBool = [true, true, false, true, false]
myBool.replaceSubrange(1...3, with: Array(repeating: true, count: 3))

or (credits to MartinR)

var myBool = [true, true, false, true, false]
let range = 1...3
myBool.replaceSubrange(range, with: repeatElement(true, count: range.count))