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StringExtension.swift
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StringExtension.swift
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//
// Ext.swift
// RSBarcodesSample
//
// Created by R0CKSTAR on 6/10/14.
// Copyright (c) 2014 P.D.Q. All rights reserved.
//
import UIKit
extension String {
func length() -> Int {
return countElements(self)
}
func trim() -> String {
return self.stringByTrimmingCharactersInSet(.whitespaceAndNewlineCharacterSet())
}
func substring(location:Int, length:Int) -> String! {
return (self as NSString).substringWithRange(NSMakeRange(location, length))
}
subscript(index: Int) -> String! {
get {
return self.substring(index, length: 1)
}
}
func location(other: String) -> Int {
return (self as NSString).rangeOfString(other).location
}
func contains(other: String) -> Bool {
return (self as NSString).containsString(other)
}
// http://stackoverflow.com/questions/6644004/how-to-check-if-nsstring-is-contains-a-numeric-value
func isNumeric() -> Bool {
return (self as NSString).rangeOfCharacterFromSet(NSCharacterSet.decimalDigitCharacterSet().invertedSet).location == NSNotFound
}
}