Ruby第三天作业

参考网上例子：

class CsvRow    attr_accessor :row, :headers    def initialize(row, headers)        @headers = {}        (0...headers.count).each {|i| @headers[headers[i]] = i}    # 保存列数组        @row = row    end    def method_missing(name, *args)        @row[@headers[name.to_s]]<span style="white-space:pre"></span># 直接调用列名方法<pre name="code" class="ruby">initialize

endendmodule ActsAsCsv def self.included(base) puts base base.extend ClassMethods end def each @csv_contents.each {|row| yield row}# 覆盖each,调用传入函数,执行打印method_missing end module ClassMethods def acts_as_csv include InstanceMethods # 包含实例方法 end end module InstanceMethods def read @csv_contents = [] file = File.new(self.class.to_s.downcase + '.txt') @headers = file.gets.chomp.split(',') file.each do |row| @csv_contents << CsvRow.new(row.chomp.split(","), @headers)# 放入数组 end end attr_accessor :headers, :csv_contents def initialize read# .new初始化调用read
end endendclass RubyCsv include ActsAsCsv acts_as_csvendcsv = RubyCsv.newcsv.each {|row| puts row.one}