From: Christer Nilsson <janchrister.nilsson@...>
Date: 2006-01-09T19:16:07+09:00
Subject: Re: simple match of items in 2 arrays

Charles L. Snyder wrote:
> I can't get the comparison to work, and don't know what format to put
> the result into (hash, array of arrays, file) -  from which I can
> easily output the results (ie., lat long, city, state) by zipcode...
> 
> Any guidance appreciated..

Charles,

I don't konw if this is the best way of doing it, but it works at least.
btw, your file has errors. It the code supposed to deal with them?
e.g. commas in the latitude, spaces after minus.
Have you considered using a database table?

Christer

class ZipCodeReader
  ZipCode = Struct.new(:zipcode, :lat, :lng, :address, :state, :city, 
:freq)
  def read(filename)
    @zipcode = {}
    IO.foreach(filename) do |line|
      arr = line.chomp.split(",")
      zipcode = ZipCode.new(arr[0], arr[1].to_f, arr[2].to_f, 
arr[3].lstrip, arr[4].lstrip, arr[5].lstrip, 0)
      @zipcode[arr[0]] = zipcode
    end
  end

  def readfreq(filename)
    IO.foreach(filename) do |line|
      arr = line.chomp.split(",")
      @zipcode[arr[0]].freq = arr[1].lstrip.to_i unless 
@zipcode[arr[0]].nil?
    end
  end

  def dump
    arr=@zipcode.sort
    arr.each {|x| print x.to_s + "\n"}
  end
end

zipcode=ZipCodeReader.new
zipcode.read("zipcode.txt")
zipcode.readfreq("zipdata.txt")
zipcode.dump


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