Reference

Returns true if the named XSLT instruction or extension element is supported by the processor, enabling portable fallback branches.

Returns true if the sequence has zero items, and false if it contains one or more items.

Returns true if the first string ends with the second string, using optional collation for comparison.

Returns true if the sequence contains at least one item, and false if it is empty.

Returns the boolean value false. Used in XPath expressions where an explicit boolean false literal is required.

Returns items from a sequence for which a predicate function returns true, discarding all others.

Returns the largest integer not greater than the argument — equivalent to rounding a number down toward negative infinity.

Accumulates a result by applying a function left-to-right over a sequence, starting from an initial zero value.

Accumulates a result by applying a function right-to-left over a sequence, starting from an initial zero value.

Applies a binary function to corresponding items from two sequences, returning the concatenated results.