ConstraintsWithVisualFormatList.swift

//
//  ConstraintsWithVisualFormatList.swift
//

import UIKit

extension NSLayoutConstraint {
    /// - returns : `NSLayoutConstraint` array which is generated from visual format string array
    class func constraintsWithVisualFormatList(formats: [String],
        options: NSLayoutFormatOptions = NSLayoutFormatOptions(rawValue: 0),
        metrics: [String : AnyObject]? = nil,
        views: [String : AnyObject]
        ) -> [NSLayoutConstraint]{
            var result: [NSLayoutConstraint] = []
            for format in formats{
                let constraints = self.constraintsWithVisualFormat(format, options: options, metrics: metrics, views: views)
                result = result + constraints
            }
            return result
    }
}