摘要: Predefined Names
The following names have special meaning to perl. I could have used alphabetic symbols for some of these, but I didn't want to take the chance that someone would say reset "a-zA-Z" and wipe them all out. You'll just have to suffer along with these silly symbols. Most of them have reasonable mnemonics, or analogues in one of the shells.
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摘要: 題記：把這篇文章發到c++專區，沒有嘩眾取寵的意思，這里我想套用阿里巴巴一個資深CTO的話：程序員的知識結構應該是T形的，要精通一到兩門編程語言作為主干，而在頂端則是要多種語言結合使用，也就是我們常說的深度和廣度，那么為什么要學習Perl，我相信有過Perl經驗的程序員一定會對這種腳本語言語義的豐富和強大的字符處理能力有深刻的印象。的確，對于習慣了靜態語言的我們，Perl是個全新的世界，沒有變量聲明，沒有main函數，比起c++, 我覺得perl更向是一個不羈的頑童，perl的語法中充滿了freedom的思想
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