From: Intransition <transfire@...>
Date: 2010-04-06T12:12:46+09:00
Subject: Re: the problem of to_yaml

Did you:

  require 'yaml'

On Apr 5, 11:03 pm, Pen Ttt <myocean...@yahoo.cn> wrote:
> here is a program
> # MIT LICENSE
> #
> # Copyright (c) 2007 Soledad Penadeswww.soledadpenades.com
> #
> # Permission is hereby granted, free of charge, to any person obtaining
> a copy
> # of this software and associated documentation files (the "Software"),
> to deal
> # in the Software without restriction, including without limitation the
> rights
> # to use, copy, modify, merge, publish, distribute, sublicense, and/or
> sell
> # copies of the Software, and to permit persons to whom the Software is
> # furnished to do so, subject to the following conditions:
> #
> # The above copyright notice and this permission notice shall be
> included in
> # all copies or substantial portions of the Software.
> #
> # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> EXPRESS OR
> # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> MERCHANTABILITY,
> # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
> SHALL THE
> # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> ARISING FROM,
> # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> IN
> # THE SOFTWARE.
>
> require 'rubygems'
> require 'hpricot'
> require 'open-uri'
> doc =
> Hpricot(open("http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html"))
> #doc = open("EXIF.html") { |f| Hpricot(f) }
>
> rows = []
>
> (doc/"table.inner//tr").each do |row|
>     cells = []
>     (row/"td").each do |cell|
>
>         if (cell/" span.s").length > 0
>               values = (cell/"span.s").inner_html.split('<br
> />').collect{ |str|
>               pair = str.strip.split('=').collect{|val| val.strip}
>               Hash[pair[0], pair[1]]
>             }
>
>             if(values.length==1)
>               cells << cell.inner_text
>             else
>               cells << values
>             end
>
>         elsif
>             cells << cell.inner_text
>         end
>     end
>     rows << cells
>
> end
>
> rows.shift
>
> #p rows.to_yaml
>
> File.open('/home/pt/test/hexif.yaml', 'w') { |f|
>   f << rows.to_yaml}
>
> when i run ,
> pt@pt-laptop:~$ ruby  /home/pt/test/row.rb
> /home/pt/test/row.rb:61:in `block in <main>': undefined method `to_yaml'
> for #<Array:0x9159ad0> (NoMethodError)
>   from /home/pt/test/row.rb:60:in `open'
>   from /home/pt/test/row.rb:60:in `<main>'
>
> what's the matter?
> --
> Posted viahttp://www.ruby-forum.com/.