Perl Module 的编写
package YourModule;
# gives you Exporter's import() method directly
use Exporter 'import';
@EXPORT_OK = qw(munge frobnicate);
@EXPORT = qw(sth);
@EXPORT_OK 中声明的函数需要在use YourModule后加入qw//来申请进入全局。而@EXPORT 中声明的函数是默认就进入全局的。
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