Subject: Re: [xsl] Example of partial function application of a context-dependent built-in function? From: Dimitre Novatchev <dnovatchev@xxxxxxxxx> Date: Sun, 28 Oct 2012 07:06:24 -0700 |
One example in F & O 3.0 (section 1.6.4) is: fn:starts-with(?, ?, "http://example.com/collation") Don't ask me why this function is context-dependent ... But, a context-dependent function cannot be passed around, because "passing around" means changing the context -- so passing a context dependent function around would lead to it producing different results in different placces where it is applied. Fortunately, all "main" context - dependent functions have 0 arguments, so it isn't possible to partially apply them. The context-dependent functions that have arguments (like a collation-dependent function) are exotic (not used often), so they are kind of special cases, or exceptions of the general rules. Cheers, Dimitre On Sun, Oct 28, 2012 at 4:21 AM, Costello, Roger L. <costello@xxxxxxxxx> wrote: > Hi Folks, > > The XPath 3.0 specification says this: > > It is a static error if a static function > call is a partial function application > and the identified function is a > context-dependent built-in function. > > Would you provide an example of this please? > > /Roger > -- Cheers, Dimitre Novatchev --------------------------------------- Truly great madness cannot be achieved without significant intelligence. --------------------------------------- To invent, you need a good imagination and a pile of junk ------------------------------------- Never fight an inanimate object ------------------------------------- To avoid situations in which you might make mistakes may be the biggest mistake of all ------------------------------------ Quality means doing it right when no one is looking. ------------------------------------- You've achieved success in your field when you don't know whether what you're doing is work or play ------------------------------------- Facts do not cease to exist because they are ignored. ------------------------------------- Typing monkeys will write all Shakespeare's works in 200yrs.Will they write all patents, too? :) ------------------------------------- I finally figured out the only reason to be alive is to enjoy it.
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