So in swift there isn't a distinct difference between an Array, and a mutable Array, but the Apple docs say it is always better to use an immutable Array when you know the number of elements. So say I want to make an immutable Array of type Hi that has x different elements of type Hi.
I can do this but it will assign the same instance to each element in the array
var array = [Hi](count: x, repeatedValue: Hi())
I can do this but the elements in the array are let, and therefore not editable
var array = [Hi](count: x, repeatedValue: nil)
for hi in array {
hi = Hi()
}
Is there a constructor for Array that takes a closure so I can tell it how to make each element?
As an expression, simply:
[Int](count: x, repeatedValue: 0).map { _ in Hi() }
or, more succinctly, as suggested by @vacawama and using Range.map
(1...x).map { _ in Hi() }
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