Extension Helper

extension-helper.swift

import Foundation

extension Double {
    func format(f: String) -> String {
        return NSString(format: "%\(f)f", self)
    }
    func toString() -> String {
        return String(format: "%.1f",self)
    }

}


extension String {
    func split(splitter: String) -> Array<String> {
        let regEx = NSRegularExpression(pattern: splitter, options: NSRegularExpressionOptions(), error: nil)
        let stop = "SomeStringThatYouDoNotExpectToOccurInSelf"
        let modifiedString = regEx.stringByReplacingMatchesInString (self, options: NSMatchingOptions(),
            range: NSMakeRange(0, countElements(self)),
            withTemplate:stop)
        return modifiedString.componentsSeparatedByString(stop)
        
       // return self.componentsSeparatedByString(splitter)
    }
    
    func startWith(find: String) -> Bool {
        return self.hasPrefix(find)
    }
    
    func equals(find: String) -> Bool {
        return self == find
    }

    func contains(find: String) -> Bool{
       if let temp = self.rangeOfString(find){
          return true
       }
       return false
     }

    
    func equalsIgnoreCase(find: String) -> Bool {
        return self.lowercaseString == find.lowercaseString
    }
    
    
    
    func trim() -> String {
        return self.stringByTrimmingCharactersInSet(.whitespaceAndNewlineCharacterSet())
    }
    
    
    func removeCharsFromEnd(count:Int) -> String{
        let stringLength = countElements(self)
        
        let substringIndex = (stringLength < count) ? 0 : stringLength - count
        
        return self.substringToIndex(advance(self.startIndex, substringIndex))
    }
    
    
    func length() -> Int {
        return countElements(self)
    }
}