[Haskell-cafe] Re: PROPOSAL: New efficient Unicode string library.
dgoldsmith at mac.com
Wed Sep 26 21:49:59 EDT 2007
On Sep 26, 2007, at 11:06 AM, Aaron Denney wrote:
>> UTF-16 has no advantage over UTF-8 in this respect, because of
>> pairs and combining characters.
> Good point.
Well, not so much. As Duncan mentioned, it's a matter of what the most
common case is. UTF-16 is effectively fixed-width for the majority of
text in the majority of languages. Combining sequences and surrogate
pairs are relatively infrequent.
Speaking as someone who has done a lot of Unicode implementation, I
would say UTF-16 represents the best time/space tradeoff for an
internal representation. As I mentioned, it's what's used in Windows,
Mac OS X, ICU, and Java.
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