Ruby：调用定义的函数

如何解决Ruby：调用定义的函数

我有一个 ruby​​ 代码，它假设阅读一个段落并找到字符、单词和句子的总数，然后找到 ARI（自动可读性指数）并决定哪个年级。这是我第一次使用 ruby​​，我不知道如何调用该函数

这样写在最后一个结尾之后是否正确

calcARI("paragraph.txt")

paragraph.txt 是文件名

这是代码

    def calcARI(paragraph)

      file = File.open("paragraph.txt","r")

      if file

        file_data = file.read

        file.close

        charCount=0

        wordCount=0

        sentenceCount=0

        ARIvalue==0

        gradeLevel=""

        file.each_line { |line|

            charCount+=line.size

            for i in 1..line.length

                if(line[i]=='.')

                    sentenceCount+=1

                end

                if(line[i]==' ')
                        wordCount+=1

                end

            end

            

        }

        ARIvalue==4.71*(charCount/wordCount)+0.5*(wordCount/sentenceCount)-21.43

        case ARIvalue

        when 1

            gradeLevel="5-6 Kindergarten"

        when 2

            gradeLevel="6-7 First/Second Grade"

        when 3

            gradeLevel="7-9 Third Grade"

        when 4

            gradeLevel="9-10 Fourth Grade"

        when 5

            gradeLevel="10-11Fifth Grade"

        when 6

            gradeLevel="11-12 Sixth Grade"

        when 7

            gradeLevel="12-13 Seventh Grade"

        when 8

            gradeLevel= "13-14 Eighth Grade"

        when 9

            gradeLevel= "14-15 Ninth Grade"

        when 10

            gradeLevel= "15-16 Tenth Grade"

        when 11

            gradeLevel= "16-17 Eleventh Grade"

        when 12

            gradeLevel= "17-18 Twelth Grade"

        when 13

            gradeLevel= "18-24 College student"

        when 14

            gradeLevel="24+ Professor"

        end        

        puts "Total # of Charecter: #{charCount}"

        puts "Total # of words: #{wordCount}"

        puts "Total # of sentences: #{sentenceCount}"

        puts "Total # of Automated Readability Index: #{ARIvalue}"

        puts "Grade Level: '#{gradeLevel}''"

    else

        puts "Unable to open file!"

    end
  end

解决方法

您的代码中有很多（基本的？）错误。正确的写法如下：

def calcARI filepath
  charCount = 0
  wordCount = 0
  sentenceCount = 0
  IO.foreach(filepath) do |line|
    charCount += line.size
    wordCount += line.scan(/ /).count
    sentenceCount += line.scan(/\./).count
  end
  ariValue = 4.71 * ( charCount.to_f / wordCount ) + 0.5 * ( wordCount.to_f / sentenceCount ) - 21.43
  gradeLevel = case ariValue.ceil
               when 1
                 "5-6 Kindergarten"
               when 2
                 "6-7 First/Second Grade"
               when 3
                 "7-9 Third Grade"
               when 4
                 "9-10 Fourth Grade"
               when 5
                 "10-11Fifth Grade"
               when 6
                 "11-12 Sixth Grade"
               when 7
                 "12-13 Seventh Grade"
               when 8
                  "13-14 Eighth Grade"
               when 9
                  "14-15 Ninth Grade"
               when 10
                  "15-16 Tenth Grade"
               when 11
                  "16-17 Eleventh Grade"
               when 12
                  "17-18 Twelth Grade"
               when 13
                  "18-24 College student"
               when 14
                 "24+ Professor"
               else
                 ""
               end        
  puts "Total # of Charecter: #{charCount}"
  puts "Total # of words: #{wordCount}"
  puts "Total # of sentences: #{sentenceCount}"
  puts "Total # of Automated Readability Index: #{ariValue}"
  puts "Grade Level: '#{gradeLevel}'"
rescue StandardError => e
  STDERR.puts e.message
end

顺便说一句，您计算字符、单词和句子的方式远非准确，但如果您的 ARI 考虑到这一点，那么它们可能是正确的？

要回答您的问题，是的，您可以在定义后调用 calcARI。