Hi,
On Dec 1, 2010, at 12:59 PM, Perry E. Metzger wrote:
> On Thu, 2 Dec 2010 02:46:07 +0900 Yasu Imao <yimao...@gmail.com>
> wrote:
>> Hello,
>>
>> I'm rewriting an app for text analysis in MacRuby, which I
>> originally wrote in RubyCocoa. But I encountered a serious
>> performance issue in MacRuby, which is related to processing text
>> using regular expressions.
>
> Is MacRuby using a derivative of the old Henry Spencer regexp library
> or is it using something more modern? For an explanation of why this
> is critical, see:
>
> http://swtch.com/~rsc/regexp/regexp1.html
MacRuby is using ICU. I'm not aware of ICU's internals, but I suspect the
performance issue is probably elsewhere here, given the huge difference against
1.8.
Laurent
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