On Oct 28, 2010, at 5:27 PM, Michael Ludwig wrote:
Dan Muey schrieb am 28.10.2010 um 14:54 (-0500):
Am I correct in thinking that the only way to get ord() to return a
value over 256 is to send the character as a Unicode string instead of
a byte string?
Yes.
In other words, is there any character that will make ord() return
over 256 when passed in as a byte string?
If you pass a character as a byte string, then it's a byte string of 8
bits per byte, and the maximum for a byte is 255.
For example, note the differences in output between a unicode string
and a byte string regarding character 257, as a unicode string it is
257, as a byte string it is 196.
Yes.
perl -Mutf8 -lwe 'print ord "Я"' # 1071
perl -lwe 'print ord "Я"' # 208
Thanks for all of that Michael, now I can rest easier! An educated assumption
is better than a anecdotal guess.
The reason this is relevant is that on a given project I am using
byte-strings-only for consistency and some encoders (i.e.
Scalar::Quote::Q() )will change from
bytes-string-friendly-grapheme-cluster notation (e.g. \xE3\x8A\xB7)
to unicode-string-notation (e.g. \x{32B7}) and I want to be sure I
always use data that gets me the former rather than the latter :)
Well, if you don't need character operations, it might work for you.
Make sure to track whether or not your data is already encoded, and also
to use the correct encoding.
--
Michael Ludwig
Yeah, it is a pretty strict environment where encoding is strictly handled and
always utf-8, the code won't ever `use utf8`, and the strings in question will
only be output (i.e. no character operations).
Again thank you very much!
--
Dan Muey
