摘要： If you omit the control varibele from the beiginning of foreach loop, Perl uses its favrorite default variable $_. This is (mostly) just like any othe 阅读全文

摘要： If a scalar is the "singular" in Perl, as we described it at the beginning of Chapter 2, the "pulural" in Perl is represented by lists and arrays. A l 阅读全文