Re: Re: If XML is too hard for a programmer, perhaps he 'd be
> Bill de hÃ?ra Wrote: > >And I don't understand this disdain for regular expressions over > >XML. Regexes are a perfectly useful tool for manipulating text. > > Certainly "If all you have is a hammer everything looks like a nail." > applies here. (No distain, I own more than one hammer) > > Yes, XML can be serialized into a string. That feature makes it portable. > > But to manipulate it as a string makes it impossible to take advantage of > properties the XML had to begin with. > > There are two worlds. The world of the "value space" and that of the > "lexical space". If you use a lexical space tool you run the risk of making > a new lexical representation for which there is NO value space equivalent. > > In other words, could you make an error with a regEx tool and end up with > invalid XML? Yes easily, and probably often. > > If you use tools that manipulate in the "value space", then obtain the > lexical representation that risk goes away. Bingo. Thus my 'impedance mismatch" and "error prone" comments. Believe me, in my travels I've seen a lot of ersatz XML processing. I've always been able to convince clients to chuck it, usuallya fter I demonstrate that there are ways to process XML just as easily as they think their hacks allow. So my incredulous reaction was not because I haven't heard this claim of "regex first", but because it seems amazing to me that this would come from Tim.
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