From: Tom Cloyd <tomcloyd@...>
Date: 2008-03-15T22:33:18+09:00
Subject: Re: baffling undefined method error - addendum

Tom Cloyd wrote:
> I'm getting an error I can't account for. In a method I've written I 
> open a file and access a yaml store:
>
> archive_stored_list = 'archive_stored_list.yml'
> archives_stored_catalog = File.open(archive_stored_list) {|i| 
> YAML.load(i)}
>
> I massage the data a bit, and want to write it back out to the same 
> file. I try to close the file so I can open it for output, but get an 
> error:
>
> archives_stored_catalog.close # <= "undefined method `close'" error is 
> written to log file here
> open(archive_stored_list,"w")  {|i| YAML.dump(archives_stored_catalog,i)}
>
> Why is this giving an error? Isn't the IO.close method always 
> available? Very confusing.
>
> This usage is straight out of Programming Ruby 2nd edition, but it 
> doesn't work for me, and I can't see the error.
>
> Would appreciate any help.
>
> Tom
>
If I do NOT try to close the file (and in all the examples I've found, 
this isn't done - I just see an open to read, followed by another open 
to write), I get a "Permission denied - archive_stored_list.yml" 
message. That makes no sense. There CAN'T be a permission problem. I 
just READ the file.

I await higher wisdom.

t.

-- 

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Tom Cloyd, MS MA, LMHC
Private practice Psychotherapist
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