> On May 1, 2017, at 8:29 PM, Xiaodi Wu via swift-evolution
> <[email protected]> wrote:
>
> Heck, we don't even have left padding for strings!
For what it's worth, a good Swift implementation of left-padding would probably
*use* `repeatElement`:
extension String {
mutating func leftPad(to intendedCount: Int, with char:
Character = " ") {
let extraCount = max(intendedCount - count, 0)
let extras = repeatElement(char, count: extraCount)
insert(contentsOf: extras, at: startIndex)
}
}
And, for that matter, `repeatElement` could be used to implement "repeat this
collection":
repeatElement(c, count: n).joined()
So I agree with you, Xiaodi, that there's no rush to do this. If we change our
minds later, we can always turn `Repeated<T>` into a generic typealias for
`RepeatedCollection<CollectionOfOne<T>>`.
--
Brent Royal-Gordon
Architechies
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