6.7 XForms Functions at a Glance

We conclude this chapter with a summary of the various XForms functions defined in this chapter; see Table 6.3. For each function, we give its argument type, return type, and a brief description.

Table 6.3. XForms Functions at a Glance

Function	Argument	Return	Description
avg	node-set	number	Average
boolean-from-string	string	boolean	Type coercion
count-non-empty	node-set	number	Count nodes
days-from-date	string	number	Days in epoch
if	boolean, string, string	string	Conditional
index	string	number	Repeat index
instance	string	node-set	Locate instance
max	node-set	number	Maximum
min	node-set	number	Minimum
months	string	number	Months
now		string	Current time
property	string	string	Feature value
seconds	string	number	Seconds
seconds-from-dateTime	string	number	Seconds