You are not abstracting. You can hide an optimized implementation behind an interface that looks just like a regular string. In fact, this is exactly what MPWXmlKit does. To the client, it just provides NSString-compatible objects. Inside they are highly optimized and just point inisde the original data, but if something happens that can't be handled that way, it can resort to returning a more "normal" NSString.
Unfortunately in this case, its not me thats not abstracting - its Sun. Yeah, sure you can do all kinds of funky things behind an interface, but String is a final class in java (ie you can't implement your own or subclass it, it just is what it is; hey it wasn't my idea!).
ne_parseInt(String s1, int offset, int length) still isn't the signature to replace "Java's parseInt", if you want to avoid extraction. ne_parseInt(CharSequence s1, int offset, int length), possibly.
It enters because that's what Jimmy was writing about - a java replacement for a java API. Quoting the article:
"Yet most string-to-data conversion macros or functions, e.g. atoi, atof and Java's parseInt assume tokens in the "extractive" sense. To support the new "non-extractive" tokenization, one can create a mirror set of functions, e.g. ne_atoi, ne_atof and ne_parseInt (ne stands for non-extractive). "
thats why I put quotes around "Java's parseInt" in the previous reply - I'd spotted your stuff was in Objective-C, I know you can do better :)
In java even the supposedly high-performance 'standard' APIs (like SAX) use 'String' everywhere, and so can't be zero-copy like Jimmy's proposal; we have to resort to other hacks - eg I wrote a SAX parser once that used a ternary tree-based StringPool for element/attribute names, it massively reduced the number of strings being created - most parsers use java's String.intern() to pool strings instead, which creates masses of garbage to collect.
Anyway I think I've written enough replies to this article... back to work...
"It enters because that's what Jimmy was writing about - a java replacement for a java API. Quoting the article:"
Huh?? He talks about XML/string parsing in general, not about Java in particular. Certainly the references to atoi(), lex, Macros and C are a pretty strong hint that it's not just Java we're talking about here...
But not really important, I think we understand each other :-))
We (XimpleWare) just released our XML processing software and it is at vtd-xml.sf.net. I would like to personally invite you to take a look. Your input and suggestions are very welcome.
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