在perl中访问数组的各个元素的问题

Question

我在解析数组时遇到了麻烦。我用过

print Dumper($variable)

获取

$VAR1 = [
          'joshn',
          'taylor'
        ];

我需要得到josh和taylor的个人元素。我怎样才能获得它？

Answer 1

# get last element 
my $last = $variable->[-1];

# get first element
my $first = $variable->[0]; # cryptic equivalent: $$variable[0] (don't use it) 
# get second element
my $second = $variable->[1]; # also $$variable[1]

# same effect as above
my ($first, $second) = @{$variable}; # or @$variable for short

Answer 2

我猜$variable是数组的引用，然后是

for(@{$variable}) {
    print $_, "\n"
}

编辑：访问数组中的最后一个元素：

my @array = @{$variable};
print $array[$#array];