如何用perl变量的变量？

Question

比如
my $test="sc";

my $showtest=test;

如何通过showtest来得到sc?

Answer 1

my $showtest = \$test;
print "value $$showtest";

Answer 2

引用    $showtest = \$test;
解引用 $$showtest

Answer 3

比如
my $test="sc";

my $showtest=test;

如何通过showtest来得到sc?
linfengfeiye 发表于 2011-04-14 16:28

eval

Answer 4

本帖最后由 albertd 于 2011-04-16 06:10 编辑

1. $test = "sc";
2. $showtest = test;
3. print ${$showtest};

复制代码This is symbolic reference which is not recommended.
if you enable "use strict' you need to enable "no strict 'refs'" to make it work.