op:boolean-less-than - XPath XQuery Reference

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XPath/XQuery boolean-less-than function

Returns true if the first argument is false and the second is true.

Defines the semantics of the "lt" operator when applied to two xs:boolean values. Also used in the definition of the "ge" operator.

op:boolean-less-than(

$arg1 as xs:boolean,
$arg2 as xs:boolean

) as xs:boolean

The function returns true if $arg1 is false and $arg2 is true. Otherwise, it returns false.

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