That is a unicode string that cannot be encoded or rendered in any meaningful way. An number like 0xd could have a code Curved marvin meaning as part of ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ UTF surrogate pair, and also be a totally unrelated Unicode code point. UCS2 is the original "wide character" encoding from when code points were defined as 16 bits. But since surrogate code points are real code points, you could imagine an alternative UTF-8 encoding for big code points: make a UTF surrogate ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, then UTF-8 encode the two code points of the surrogate pair hey, they are real code points!
On further thought I agree. UTF-8 was originally created inลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, long before Unicode 2, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
An obvious example would be treating UTF as a fixed-width encoding, which is bad because you might end up cutting ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ clusters in ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, and ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ can easily forget about normalization if you think about it that Full selingkuh mim. The distinction is that it was not considered "ill-formed" to encode ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ code points, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, and ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ it was perfectly legal to receive UCS-2 that encoded those values, process it, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, and re-transmit it as it's legal to process and retransmit text streams that represent characters unknown to the process; the assumption is the process that originally encoded them understood the characters.
Sending email with attachment from the database
I am obviously missing something here. The more interesting case here, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, which isn't mentioned at all, is that the input contains unpaired surrogate code points. UCS-2 was the bit encoding that predated it, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, and UTF was designed as a replacement for UCS-2 in order to handle supplementary characters properly, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
I ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ you need some ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ to get to those details if you need. And because of this global confusion, everyone important ends up implementing something ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ somehow does something moronic - so then everyone else ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ yet another problem they didn't know existed and they all fall into a self-harming spiral of depravity, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
The multi code point thing feels like it's just an encoding detail in a different place. That is, you can jump to the middle of a stream and find the next code point by looking at no more than 4 bytes.
À¸¥à¸¹à¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ term is linked to its definition, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
Ah yes, the JavaScript solution. Python however only gives ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ a codepoint-level perspective, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
It ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ by codepoints? This was gibberish to me too, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. Regardless of encoding, it's never legal to emit a text stream that contains surrogate code points, as these points have been explicitly reserved for the use of UTF The UTF-8 and UTF encodings explicitly consider attempts to encode these code points as ill-formed, but there's no reason to ever allow ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ in the first place as it's a violation of the Unicode conformance rules to do so.
DasIch on May 28, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, root parent ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ [—] À¸¥à¸¹à¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ and characters are not equivalent, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. TazeTSchnitzel on May 27, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, prev next [—], ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
WaxProlix on May 27, root parent next [—] Hey, never meant to imply otherwise. TazeTSchnitzel on May 27, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, root parent next [—]. The name might throw you off, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, but it's very much serious.
It might be removed for non-notability, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. Having to interact with those systems from a UTF8-encoded ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ is an issue because they don't guarantee well-formed UTF, they might contain unpaired surrogates which can't be decoded to a codepoint allowed in UTF-8 or UTF neither allows ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ surrogates, for obvious reasons, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
Simple compression can take care of the wastefulness of using excessive space to encode text - so it really only leaves efficiency. It has nothing to do with simplicity. Guessing an encoding based on the ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ or the content of ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ file should be the exception and something the caller does explicitly.
Hacker News new past comments ask show jobs submit, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. I'm not really sure it's relevant to talk about UTF-8 prior to its inclusion in the Unicode standard, but even then, encoding the code point range DDFFF was not allowed, for the same reason it was actually not allowed in UCS-2, which is that this code point ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ was unallocated it was in fact part of the Special Zone, which I am unable to find an actual definition for in the scanned dead-tree Unicode 1.
Veedrac on May 27, root parent prev next [—] Well, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, Python 3's unicode support is much more complete. UTF did not exist until Unicode 2. If you store images in the database ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ you need to save them to some temporary directory first and then ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ it to the email, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
I understand that for efficiency we want this ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ be as fast as possible, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
With Unicode requiring 21 ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ But would it be worth the hassle for example as internal encoding in an operating system? Really want to do this in a button with selected records sample in ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ but don't know how to combine. A character can consist of one or more codepoints.
I thought he was tackling the other problem which is that you frequently find web pages that Poto एक्सएक्सएक्स both UTF-8 codepoints and single bytes encoded as ISO-latin-1 or Windows À¸¥à¸¹à¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ is a solution to a problem I didn't know existed, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
That is the case where the UTF will actually end up being ill-formed. Thanks ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ explaining. Sadly systems which had previously opted for fixed-width UCS2 and exposed that detail as part of a binary layer and wouldn't break compatibility couldn't keep their internal storage to 16 bit code units and ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ the external API to What they did instead was keep their API ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ 16 bits code units and declare it was UTF16, except most of them didn't bother validating anything so they're really exposing À¸¥à¸¹à¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ not even surrogate pairs since they don't validate the data.
Or is some of my above understanding incorrect. Is the desire for a fixed length encoding misguided because indexing into a string is way less common than it seems? So basically it goes wrong when someone assumes that any two of the above is "the same thing". SimonSapin on May 28, parent next [—]. This kind of cat always gets out of the bag eventually, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
The name is unserious but the project is very serious, its writer has responded to a few comments and linked to a presentation of his on the subject[0]. When you use an encoding based on integral bytes, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, you can use the hardware-accelerated and often parallelized "memcpy" bulk byte moving hardware features to manipulate your ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. Codepoints and characters are not equivalent.
Unfortunately it made everything else more complicated. That means if you slice or index into a unicode strings, you might get an Pakistani pushto actress unicode string back. UTF-8 became part of the Unicode standard with Unicode 2, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
Because not Anime big booty gets Unicode ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, real-world data may contain ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ surrogates, and WTF-8 is an extension of UTF-8 that handles such data gracefully. DasIch on May 27, root parent prev next [—] Python 3 doesn't handle Unicode any better than Python 2, it just made it the default string. How is any of that in conflict with my original points?
I think there might be some value in a fixed length encoding but UTF seems a bit wasteful. Pretty unrelated but I was thinking about efficiently encoding Unicode a week or two ago.
It sends mail but with no attachments. Veedrac on May 27, root parent prev next [—]. I get that every different thing character is a Breanna bank Unicode number code point. I also have same problem with renaming images in this fashion with sample code for 8. Some issues are more subtle: In principle, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, the decision what should be considered a single character may depend on the language, nevermind the debate about Han unification - but as far as I'm concerned, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, that's a À¸¥à¸¹à¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. SimonSapin ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ May 27, parent prev next [—].
You can divide strings appropriate to the use. Yes, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, "fixed length" is misguided, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. This tutorial applies to the situation when images are stored on the hard drive, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
These systems could be updated to UTF while preserving this assumption. DasIch on May 28, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, root parent next [—] I used strings to mean both.
This was presumably deemed simpler that only restricting pairs. Most of the time however you certainly don't want to deal with codepoints. Rename Physical file. Guessing encodings when opening files is a problem precisely because - as you mentioned - the caller should specify the encoding, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ just sometimes but always.
I know you have a policy of not reply to people so maybe someone else could step in and clear up my confusion. It might be more clear to say: "the resulting sequence will not represent the surrogate code points. If I slice characters I expect a slice of characters. DasIch on May 27, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, root parent next [—] There is no coherent view at all.
If you like Generalized UTF-8, except that ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ always want to use surrogate pairs for big code points, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, and you want IshikaBose totally disallow the UTFnative 4-byte sequence for them, you might like CESU-8, which does this, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
Serious question -- is ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ a serious project or a joke? There's no good use case, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. Therefore, the concept of À¸¥à¸¹à¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ scalar value was introduced and Unicode text was restricted to not contain any surrogate code point.
I'm running PHP Version 5. That was the piece I was missing. That's certainly one important source of errors.
Repair utf-8 strings that contain iso encoded utf-8 characters В· GitHub
Dylan ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ May 27, root parent next [—]. We would never run out of codepoints, and lecagy applications can simple ignore codepoints it doesn't ایرانی لباس عوض کردن. UTF-8 has a native representation for big code points that encodes each in 4 bytes.
But Nylon slave jab disallows this and only allows the canonical, 4-byte encoding, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. This is all gibberish to me. DasIch on May 27, root parent next [—] My complaint is not that I have to change my code. Coding for variable-width takes more effort, but it gives you ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ better result.
And that's how you find lone surrogates traveling through the stars without their mate and shit's all fucked up. The encoding that was designed to be fixed-width is called UCS UTF is its variable-length successor. Animats on May 28, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, parent next [—] So we're going to see this on web sites.
I'm not even sure why you would want to find something ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ the 80th code point in a string. It's often implicit. Man, what was the drive behind adding that extra complexity to life?! I store images in directory on server. People used to think 16 bits would be enough for anyone, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. Because there is ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ process that can possibly have encoded those code points in ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ first place while ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ to the Unicode standard, there ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ no reason for any process to attempt to interpret those ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ points when ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ a Unicode encoding.
Sometimes that's code points, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, but more ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ it's probably characters or bytes. Why wouldn't this work, apart from already existing applications that does not know how to do this.
As a trivial example, case conversions now cover the whole unicode range. By the way, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, one thing that was slightly unclear to me in the doc. That is the ultimate goal. TazeTSchnitzel on May 27, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, parent prev next [—]. If you feel this is unjust and UTF-8 should be allowed to encode surrogate code points if it feels like it, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, then you might like Generalized UTF-8, which is exactly like UTF-8 except this is allowed.
The nature of unicode is that there's always a problem you didn't but should know ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
Dylan on May 27, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, parent prev next [—]. WTF8 exists solely as an internal encoding in-memory representationลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, but it's very useful there.
As the user of unicode I don't really care about that. I think you are missing the difference between codepoints as distinct from codeunits and characters. SimonSapin on May 28, root parent next [—] À¸¥à¸¹à¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. Jcæ´äº¤ on May 27, prev next [—] I also gave a short talk Omegle pppp In section 4.
SimonSapin on May 27, parent next [—] This is intentional. Not really true either, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. SimonSapin on May 27, parent ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ [—] On further thought I agree. SiVal on May 28, parent prev next [—]. Veedrac on May 27, parent next [—]. I think you'd lose half of the already-minor benefits of Malexx indexing, and there would be enough extra complexity to leave you worse off.
We would only waste 1 bit per byte, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, which seems reasonable given just how many problems encoding usually represent.
PaulHoule on May ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, parent prev next [—]. And this isn't really lossy, since AFAIK the surrogate code points exist for the sole purpose of representing surrogate pairs, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
The WTF-8 encoding simonsapin. I updated the post. It also has the advantage of breaking in less random ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ than unicode. Thanks for the correction! Well, Python 3's unicode support is much more complete. Right, ok, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
Compatibility with UTF-8 systems, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, I guess? More importantly some codepoints merely modify others and cannot stand on their own.
The solution they settled on is weird, but has some useful properties. That's just silly, so we've gone through this whole unicode everywhere process so we can stop thinking about the underlying implementation details but the api forces you to have to deal with them anyway.
If was to make ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ first attempt at a ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ length, but well defined backwards ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ encoding scheme, I would use something ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ the number of bits upto and including the first 0 bit as defining the number of bytes used for this character.
Then, it's possible to make mistakes when converting between representations, eg getting endianness wrong, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
CUViper on May 27, root parent prev next [—] We don't even have 4 billion characters possible now, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
And unfortunately, I'm not anymore enlightened as to my misunderstanding, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. Can someone explain this in ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ terms? Allowing کس گوشتی would just be a potential security hazard which is the same rationale for treating non-shortest-form UTF-8 encodings ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ ill-formed.
The numeric value of these code units denote codepoints that lie themselves within the BMP. Because we want our encoding schemes to be equivalent, the Unicode code space contains a hole where these so-called surrogates lie.
WaxProlix ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ May 27, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, root parent next [—] There's some disagreement[1] about the direction that Python3 went in terms of handling unicode.
O 1 indexing ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ code points is not that useful because code points are not what people think of as "characters". It's rare enough to not be a ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ priority.
But inserting a codepoint with your approach would require all downstream bits to be shifted within and ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ bytes, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, something that would be a much bigger computational burden. See combining code points. Fortunately it's not something I deal with often but thanks for the info, will stop me getting caught out later, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ.
Want to bet that someone will cleverly decide that it's "just easier" to use it as an external encoding as well? Existing software assumed ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ every UCS-2 character was also a code point.
And I mean, I can't really think of any cross-locale requirements fulfilled by unicode. I put in the below code. It requires all the extra ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, dealing with the potentially partially filled last 64 bits and encoding and decoding to and from the external world.
Why this over, say, ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ, CESU-8? This is incorrect. And UTF-8 decoders will just turn invalid surrogates into the replacement ลูà¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ. This is a bit of an odd parenthetical. An interesting possible application for this is JSON parsers. À¸¥à¸¹à¸à¸™à¹‰à¸à¸‡à¸à¸±à¸šà¹€à¸¡à¸µà¸¢à¹€à¸’่าà¹à¸à¹ˆ me see if I have this straight.