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#!/usr/bin/perl # 换行 \n 位于双引号内,有效 $str = "W3xue教程 \nwww.w3xue.com"; print "$str\n"; # 换行 \n 位于单引号内,无效 $str = 'W3xue教程 \nwww.w3xue.com'; print "$str\n"; # 只有 W 会转换为大写 $str = "\uw3xue"; print "$str\n"; # 所有的字母都会转换为大写 $str = "\Uw3xue"; print "$str\n"; # 指定部分会转换为大写 $str = "Welcome to \UW3xue\E.com!"; print "$str\n"; # 将到\E为止的非单词(non-word)字符加上反斜线 $str = "\QWelcome to w3xue's family"; print "$str\n";
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