From: unbewusst.sein@... (=?ISO-8859-1?Q?Une_B=E9vue?=)
Date: 2010-06-02T23:25:05+09:00
Subject: Re: having a class method called only one time ?

Une B�vue <unbewusst.sein@google.com.invalid> wrote:

> Array HOST_IP = [] # the array let me make the constant "mutable"

it seems to work like that :

class HFSFile

  HOST_IP = []

  ...

  def host_ip
    return HOST_IP.first unless HOST_IP.empty?
    HOST_IP << host_ip_get
    return @h[:host_ip]
  end

  ...

  private

  def host_ip_get
    $stderr.puts "'host_ip_get' was called!" # called 1 time for 2
instantiations.
    @h[:host_ip] = ''
    while @h[:host_ip].empty?
      @h[:host_ip] = `curl -s http://whatismyip.org`.chomp
    end
    return @h[:host_ip]
  end

  ...

end
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