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Hi, I need to restrict xs:double to any allowable double value - with the exception of NaN. Having looked further into regular expressions for XML Schema - there seems to be contradictory advice around. Following one set of advice would allow us to use ^ at the start of the reg exp to exclude NaN: "[^N].*" - this doesn't work with either Xerces or XML Spy. I find the relevant section of the W3C spec somewhat difficult to decipher. However, I get the impression that ^ is simply a normal character in xsd land.. Another piece of advice is to use nested brackets such as: "[a-zA-Z-[ABC]]" (Use any letters except AB or C). Along these lines I've tried: "[.-[NaN]]*" - far from working... and "[.*-[NaN]]*" - ditto... So then, the next option is to define a larger regular expression such as: "[+\-]?(\d+(\.\d*)?([eE][+\-]?\d+)?)|([+\-]?INF)" This does not allow .00009 for example, so we'll have to make the reg exp even more complicated. My question is: Does anyone know of a simpler way of doing this? Thanks Max
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