Reference

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.

Applies a function to each item of a sequence and returns the concatenation of all results.

Formats an xs:date value into a human-readable string using a picture pattern, with optional locale and calendar support.

Formats an xs:dateTime value into a human-readable string using a picture pattern, with optional locale and calendar support.

Formats a number as a string using a picture pattern and an optional named decimal format, following the same rules as Java's DecimalFormat.

Formats an xs:time value into a human-readable string using a picture pattern, with optional locale and calendar support.

Returns the number of arguments (arity) that a function item accepts.

Returns true if the named function is available in the current XSLT processor, supporting portable use of extension functions.