iOS: разделение NSString на FilePath & Name + Extension

Question

iOS: разделение NSString на FilePath & Name + Extension

Как разделить

@"blah/.../myfile.txt"

на

@"blah/.../myfile" 

и

@"txt"

Answer 1

NSString* fileName = [fileString stringByDeletingPathExtension];
NSString* extension = [fileString pathExtension];