Attributed text with two text alignments

Using NSMutableParagraphStyle with NSTextTab:

let paragraph = NSMutableParagraphStyle()
paragraph.tabStops = [
    NSTextTab(textAlignment: .Right, location: 100, options: [:]),
]

let str = "Label\tValue\n"
    + "foo\tbar\n"

let attributed = NSAttributedString(
    string: str,
    attributes: [NSParagraphStyleAttributeName: paragraph]
)

let view = UITextView(frame: CGRectMake(0, 0, 120, 120))
view.textContainer.lineFragmentPadding = 10

view.attributedText = attributed

Of course, this aligns to "tabstop", but not to the edge of UITextView. When you modify the size of the view, you have to also modify the location of NSTextTab.