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Re: in `open': no implicit conversion of nil into String (TypeError) from ex30.rb:3:in `<main>'

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On 2016-04-12 22:34, Cai Gengyang <gengyangcai@gmail.com> wrote:
 > What does "invoking the script without arguments" mean ? 

Are you sure that you've done all the exercises? You say you're now at Ex. 30,
but obviously you didn't pay that much attention to Ex. 13, did you?

Regards,
Sebastian

-- 
Sebastian (Rudolfo) Christ
http://rudolfochrist.github.io
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in `open': no implicit conversion of nil into String (TypeError)  from ex30.rb:3:in `<main>' Cai Gengyang <gengyangcai@gmail.com> - 2016-04-11 20:31 -0700
  Re: in `open': no implicit conversion of nil into String (TypeError) from ex30.rb:3:in `<main>' Robert Klemme <shortcutter@googlemail.com> - 2016-04-12 08:09 +0200
    Re: in `open': no implicit conversion of nil into String (TypeError) from ex30.rb:3:in `<main>' Cai Gengyang <gengyangcai@gmail.com> - 2016-04-12 22:34 -0700
      Re: in `open': no implicit conversion of nil into String (TypeError) from ex30.rb:3:in `<main>' Sebastian Christ <rudolfo.christ@gmail.com> - 2016-04-13 10:23 +0200
        Re: in `open': no implicit conversion of nil into String (TypeError) from ex30.rb:3:in `<main>' Cai Gengyang <gengyangcai@gmail.com> - 2016-04-13 09:08 -0700
          Re: in `open': no implicit conversion of nil into String (TypeError) from ex30.rb:3:in `<main>' Robert Klemme <shortcutter@googlemail.com> - 2016-04-13 20:27 +0200
            Re: in `open': no implicit conversion of nil into String (TypeError) from ex30.rb:3:in `<main>' Cai Gengyang <gengyangcai@gmail.com> - 2016-04-14 21:59 -0700

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