> On Dec 24, 2017, at 2:51 PM, Quincey Morris > <quinceymor...@rivergatesoftware.com> wrote: > > On Dec 24, 2017, at 04:45 , Charles Srstka <cocoa...@charlessoft.com > <mailto:cocoa...@charlessoft.com>> wrote: >> >> you could consider making its interface take generic collections of UInt8 > > This would not solve the *general* problem Daryle raised. He’s looking for a > way to test the logic of some buffer-boundary-crossing code, which makes > sense only if he has multiple buffers, which means he must be using > “enumerateBytes”, which not supported by Collection<UInt8>. If he doesn’t use > enumerateBytes, then he doesn’t need anything but Data anyway. > > However, considering what appears to be the *actual* problem (finding the > first CR or CR-LF or CR-CR-LF separator in a byte sequence), he could use > Data without using enumerateBytes, and still not risk copying the data to a > contiguous buffer. > > This solution would use Data’s “index(of:)” to find the first CR, then a > combination of advancing the index and subscripting to test for LF in the > following 1 or 2 positions.
That’s basically what I was thinking (well, using Collection<UInt8>’s index(of:) rather than just Data’s). However, if enumerateBytes legitimately does need to be used, you could also create a protocol containing that method and make Data and DispatchData both retroactively conform to it. Charles _______________________________________________ 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
