Puppet-Split-获取可变大小数组的最后一个元素

Question

有人知道获取傀儡清单中数组的最后一个元素的巧妙方法吗？

现有代码如下：

class nginx {

    define vhost {

        #-----
        # Init vars
        #-----
        $app_parts = split($name, '[_]')

        # I can access any element using numeric notation
        notify { "Element: ${app_parts[0]}": }

        # How do I access the last element?

Answer 1

Arrays support negative indexing, with -1 being the final element of the array:

文档链接

所以..

$foo = [ 'one', 'two', 'three', 'four', 'five' ]
notice( $foo[-1] )
# 'five'