Utility function to get the needed height for a string to be displayed in a UIKit component

StringUtils.swift

public static func heightNeeded(text:String, font:UIFont, width:CGFloat) -> CGFloat{
    let label:UILabel = UILabel(frame: CGRectMake(0, 0, width, CGFloat.max))
    label.numberOfLines = 0
    label.lineBreakMode = NSLineBreakMode.ByWordWrapping
    label.font = font
    label.text = text
    
    label.sizeToFit()
    return label.frame.height
}