RE: [xml-dev] Re: xml-dev Digest 24 Mar 2010 11:49:31 -0000 Issue 2307

["Michael Kay" <mike@saxonica.com>]

> I disagree that this specifies the order of execution.
> 
> >>  example 3: for i in 1..length(array) yield function(a[i])
> 
> The results must be in order but the execution need not.
> 

Well, that depends on the semantics of the language in which it's written,
which we don't know. Many procedural languages have syntax a bit like this,
and allow function() to have side-effects such as changing global variables,
and in such a case it's quite plausible that the language semantics would
require sequential execution. On the other hand many functional languages
also have similar constructs, and don't allow function() to have
side-effects, and don't mandate sequential execution.

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay