fn:fold-left

Processes the supplied sequence from left to right, applying the supplied function repeatedly to each item in turn, together with an accumulated result value.

fold-left($seq as item()*, $zero as item()*, $f as function(item(), item()*) as item()*) ➔ item()*

Arguments

 

$seq

item()*

The input sequence

 

$zero

item()*

The initial value (the value to be returned if the sequence is empty)

 

$f

function(item(), item()*) as item()*

The function to be applied to each item in the sequence

Result

item()*

Namespace

http://www.w3.org/2005/xpath-functions

Links to W3C specifications

XPath 3.1 Functions and Operators

Notes on the Saxon implementation

Available in Saxon-HE since 10; in Saxon-PE/EE since 9.6.

See also:

fn:fold-right()