title: Array of email case insensitive searching
body: <p>I have an array of strings,string in the sense email id's... so i need to check whether the array contains the email id which i'm giving....also need to check case insensitive....currently i'm using following code for that</p>
  
  <pre><code> if ([arrayAllEmail containsObject:email])
  {
  // do some stuff here...
  }
  </code></pre>
  
  <p>the problem is the suppose the arraAllEmail contains Abc@gmail.com....but i'm giving (email = abc@gmail.com)abc@gmail.com for checking purpose to it'll return "NO" as a result...that's why i need  case insensitive searching mechanism.... so anyone know how to solve this issue pls give me answer.. </p>