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Higher order Functions
| function-lookup(
xs:QName("fn:substring"),2)("abcd",2)
returns bcd. |
| function-name(fn:substring#2)
returns fn:substring |
| function-arity(fn:substring#3)
returns 3 |
| for-each(1 to 5, function($a) { $a * $a }) returns (1,4,9,16,25) |
| filter(1 to 10, function($a) {$a mod 2 = 0}) returns (2,4,6,8,10) |
| fold-left(1 to 5, 10000,
function($a, $b) { $a + $b }) returns 10015 |
| fold-right(1 to 5, "***", fn:concat(?, ".", ?)) returns 1.2.3.4.5.*** |
| for-each-pair(("a", "b", "c"), ("x", "y", "z"),
concat#2) returns (“ax”,”by”,”cz”) |