Subject: Re: [xsl] Two "Philisophical" questions about the language From: David Carlisle <davidc@xxxxxxxxx> Date: Sun, 18 Jan 2009 11:49:06 GMT |
> To those questions I would add another one: > why "if" xpath 2.0 expression demands "else" part? because an expression always has to return a value, I think the same is true of most other languages that have an if expression (as opposed to an if statement). I suppose in theory it could be defined that an if with no else returns () but then many things would not type check correctly. An if statement is different you have the option of "doing nothing" so it makes sense to have an xsl:if with no else. David ________________________________________________________________________ The Numerical Algorithms Group Ltd is a company registered in England and Wales with company number 1249803. The registered office is: Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom. This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. ________________________________________________________________________
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