我一直试图想出这个问题,直到今晚.我已经用Google搜索了它,并没有任何示例或我的黑客实例完成它.看起来这应该很简单,但我无法得到它.这是代码：
#!/usr/bin/perl -w
use strict;
use Data::Dumper;
my $complex_variable = {};
my $MEMORY = "$ENV{HOME}/data/memory-file";
$complex_variable->{ 'key' } = 'value';
$complex_variable->{ 'key1' } = 'value1';
$complex_variable->{ 'key2' } = 'value2';
$complex_variable->{ 'key3' } = 'value3';
print Dumper($complex_variable)."TEST001\n";
open M,">$MEMORY" or die;
print M Data::Dumper->Dump([$complex_variable],['$complex_variable']);
close M;
$complex_variable = {};
print Dumper($complex_variable)."TEST002\n";
# Then later to restore the value,it's simply:
do $MEMORY;
#eval $MEMORY;
print Dumper($complex_variable)."TEST003\n";
这是我的输出：
$VAR1 = {
'key2' => 'value2','key1' => 'value1','key3' => 'value3','key' => 'value'
};
TEST001
$VAR1 = {};
TEST002
$VAR1 = {};
TEST003
我读到的所有内容都表明TEST003输出看起来与TEST001输出相同,这正是我想要实现的.
我在这里错过了什么？我应该“做”不同的做法,还是应该“反对”,如果是这样的话？
谢谢你的帮助…
解决方法
我们都有那些晚上！尝试：
$complex_variable = do $MEMORY || die "Bad data";