On Apr 3, 2015, at 11:19 , Marco S Hyman <m...@snafu.org> wrote: > > The original code will return true only if all code points map to white space.
The “failure” I was talking about is something a bit different. It has two problems: 1. For Unicode code points that are represented by 2 code values, it tests the code values, not the code points. That’s wrong. 2. For graphemes that are represented by 2 or more code points, it still tests the code values, of which there could be 4 or more per grapheme. That’s also wrong. With the ‘for char in String (self)’ code, if you tested whether a decomposed acuteA was in the (7-bit) ASCII character set, you’d get the answer “YES". You could mitigate #1 by using UTF-32 code values instead of UTF-16, but that wouldn’t help with #2. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
