将数组存储为映射值问题

Question

我希望@arr直接包含城市名称。我打印时希望$arr[0]为c1。 代码有什么问题？

my $state="Illinois";

 push @{$mstates{$state}}, "c1";

 push @{$mstates{$state}}, "c2";


 my @arr=$mstates{$state};

Answer 1

也许你想要

my @arr=@{$mstates{$state}};

Answer 2

好吧，

my @arr=@{$mstates{$state}}; 

即。，

use strict;
use warnings;
use Data::Dumper;
my $state="Illinois";
my %mstates;
 push @{$mstates{$state}}, "c1";
 push @{$mstates{$state}}, "c2";
 my @arr=@{$mstates{$state}};
 print Dumper(\@arr);

输出：

$VAR1 = [
          'c1',
          'c2'
        ];