Case Insensitive Method to Find a String in Another String in iOS

Can be used to filter data under search bar. Personally I have developed it for this purpose.

Case Insensitive Method to Find a String in Another String in iOS:

<br />
– (BOOL)findString:(NSString*)searchString inString:(NSString*)bigString<br />
{<br />
    if ([bigString length]==0) {<br />
        return NO;<br />
    }</p>
<p>    if (!([bigString rangeOfString:searchString options:NSCaseInsensitiveSearch].location == NSNotFound)) {<br />
        return YES;<br />
    }</p>
<p>    return NO;<br />
}<br />