fn:exists

fn:exists($arg as item()*) as xs:boolean

This function is deterministic, context-independent, and focus-independent.

If the value of $arg is a non-empty sequence, the function returns true; otherwise, the function returns false.

The expression fn:exists(fn:remove(("hello"), 1)) returns false().

The expression fn:exists(fn:remove(("hello", "world"), 1)) returns true().

The expression fn:exists([]) returns true().

The expression fn:exists(map{}) returns true().

The expression fn:exists("") returns true().

Assuming $in is an element with no children:

               let $break := 
               return fn:exists($break)
            

The result is true().