demonar

import Foundation

extension Float {
    func format(f: String) -> String {
        return String(format: "%\(f)f", self)
    }
    mutating func roundTo(decimals: Int) {
        let divisor = pow(10.0, Float(decimals))
        self = round(self * divisor) / divisor
    }

demonar

import Foundation

extension NSDate {
    func coolDate() -> String {
        if self.minutesFromNow() < 1 {
            return "Now"
        } else if self.minutesFromNow() < 60 {
            return numberWithSuffix(self.minutesFromNow(), "m", false)
        } else if self.hoursFromNow() < 24 {
            return numberWithSuffix(self.hoursFromNow(), "h", false)

demonar

import Foundation

class DictionaryUtils {
    class func removeNullsFromDictionary(origin:[String:AnyObject]) -> [String:AnyObject] {
        var destination:[String:AnyObject] = [:]
        for key in origin.keys {
            if origin[key] != nil && !(origin[key] is NSNull){
                if origin[key] is [String:AnyObject] {
                    destination[key] = self.removeNullsFromDictionary(origin[key] as! [String:AnyObject])
                } else if origin[key] is [AnyObject] {