Cart
[Home] [By Thread] [By Date] [Recent Entries]
Thank you for your response Ken, but as said Michael my question was about "always supplied parameters". The '=' operator compares two sequences, and returns true if there is a pair of values, one from each sequence, that are equal to each other. If one of the sequences is empty, the result will always be false. However, I may have misinformed you in my previous response. The specification says: "If an optional parameter has no select attribute and has an empty sequence constructor, and if there is no as attribute, then the default value of the parameter is a zero length string." This is why the test $foo='' is working for you. The default value changes to an empty sequence if an "as" attribute is present to declare the type. In this case the test to apply is test="empty($foo)". Michael Kay Saxonica
|
