On Sep 3, 2016, at 02:54 , Gerriet M. Denkmann <[email protected]> wrote:
>
> I wanted to print some index with a format.
OIC.
Your solution doesn’t work in Swift 3, because the String.init (_:) method has
been renamed to String.init (describing:), and actually produces a textual
description of the string index:
Index(_base: Swift.String.UnicodeScalarView.Index(_position: 1),
_countUTF16: 0)
However, if you want to format the number of characters in a string, you can do
it directly like this:
let a = "a"
let s = String (format: "%9d", a.characters.count) // “characters” mean
grapheme clusters in Swift
print (s) // -> " 1”
Or you can use a.unicodeScalars.count (for counting code points), or
a.utf16.count (for counting UTF-16 code units), if one of those is the count
you want instead.
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