2015年4月22日
摘要: 书中源码是这样的File.foreach('1.txt') do |x| if(($. == 1) || x =~ /eig/) .. (($. == 3) || x =~ /nin/) then print x endend其中 1.txt内容如下firstsecondthirdfour... 阅读全文
posted @ 2015-04-22 12:25 c3tc3tc3t 阅读(297) 评论(0) 推荐(0)
摘要: putstrueandfalse#相当于(putstrue)andfalseUse &&/|| for boolean expressions, and/or for control flow. (Rule of thumb: If you have to use outer parentheses... 阅读全文
posted @ 2015-04-22 09:24 c3tc3tc3t 阅读(257) 评论(0) 推荐(0)