title: IOS How to remove Zero Width Space [ E2 80 8B ] from NSString
body: <p>With copy/paste, one of my clients put in a textfield of my IOS app a text containing Zero Width Space [ E2 80 8B ] and I want to remove them.</p>
  
  <p>here's an example of text : basse ​température ​avec ​dégivrage ​électrique</p>
  
  <p>what I tried :</p>
  
  <pre><code>NSString* zarb = [NSString stringWithFormat:@"%c%c%c",0xE2,0x80,0x8B];
  NSString*resu=[ch stringByReplacingOccurrencesOfString:zarb withString:@""];
  // does not work
  
  if ([ch rangeOfString:zarb].location != NSNotFound) {
        // does not work
  }
  </code></pre>
  
  <p>The hexa sequence IS in the string but I cannot remove it.
  Someone has already got this problem ?</p>