Objective-C: unichar vs. char

Question

I'm a little confused between a unichar and a char. Can I treat unichar's similar to char's?

For example, can I do this:

-(BOOL)isNewLine:(unichar)c {

if(c == '\n')
  return YES;
else
  return NO;

}

Answer 1

Yes, unichar is internally unsigned short, so you can meaningfully compare it with a char (if the latter is ASCII, but that works fine for '\n').

Answer 2

Be careful checking for newline that you know the format of your line endings, as Unix (and modern Mac) use \n, but Windows uses \r\n and classic Mac uses \r.