compare special characters like À with regular A

Question

In some languages there are letters like À, I saw that for table view sections the native iOS put À under the same section as A.
I wan

Answer 1

Here's a great article about CFStringTransform on NSHipser http://nshipster.com/cfstringtransform/

Next, apply the kCFStringTransformStripCombiningMarks transform to remove any diacritics or accents.