array:fold-left
Evaluates the supplied function cumulatively on successive values of the supplied array.
fold-left($array as array(*), $zero as item()*, $function as function(item()*, item()*) as item()*) ➔ item()*
Arguments  | |||
  | $array  | array(*)  | The input array  | 
  | $zero  | item()*  | The zero for the function  | 
  | $function  | function(item()*, item()*) as item()*  | The function to be applied to each member of the input array  | 
Result  | item()*  | ||
Namespace
http://www.w3.org/2005/xpath-functions/array
Links to W3C specifications
XPath 3.1 Functions and Operators
Notes on the Saxon implementation
Available since Saxon 9.7.