text: //
  //  NSString+TKE.h
  //  EMTE
  //
  //  Created by Taras Kalapun on 28/07/14.
  //  Copyright (c) 2014 Xaton. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface NSString (TKE)
  
  - (BOOL)contains:(NSString *)s;
  - (BOOL)isAllDigits;
  
  @end
  