使用ruby语言编程的感觉是,一次又一次的惊叹,非常神奇有人竟然把我之前用c、c++等语言编程时所遭遇的痛苦一次又一次地抚平。
下面这段代码是我照教材敲出来的(summarize.rb),用于从一段文本中选择包含感兴趣的句子。
- text =%q{
- Ruby is a great programming language. It is object oriented
- and has many groovy features. Some people don't like it, but
- that's not our problem!It's easy to learn. It's great.To learn
- more about Ruby,visit the official Ruby Web site today.
- }
- sentences =text.gsub(/\s+/, ' ').strip.split(/\.|\?|!/)
- sentences_sorted =sentences.sort_by {|sentence| sentence.length}
- one_third =sentences_sorted.length /3
- ideal_sentences =sentences_sorted.slice(one_third, one_third +1)
- ideal_sentences =ideal_sentences.select { |sentence| sentence =~ /is|are/ }
- puts ideal_sentences.join(".")
#ruby summarize.rb运行之后,弹出一个bug:summarize.rb:12: syntax error, unexpected '}'。
但是检查数遍,也没看出个所以然。倒是将one_third直接赋常量后,就OK了。继续找找原因吧。
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