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
···
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tom Cloyd, MS MA, LMHC
Private practice Psychotherapist
Bellingham, Washington, U.S.A: (360) 920-1226
<< tc@tomcloyd.com >> (email)
<< TomCloyd.com >> (website & psychotherapy weblog) << sleightmind.wordpress.com >> (mental health issues weblog)
<< directpathdesign.com >> (web site design & consultation)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
When you use a block with File.open, the filehandle is closed
automatically when the block exits. There's no point even saving it,
because the value of the whole operation will be nil.
David
--
Upcoming Rails training from David A. Black and Ruby Power and Light:
ADVANCING WITH RAILS, April 14-17 2008, New York City
CORE RAILS, June 24-27 2008, London (Skills Matter)
See http://www.rubypal.com for details. Berlin dates coming soon!
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.
···
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tom Cloyd, MS MA, LMHC
Private practice Psychotherapist
Bellingham, Washington, U.S.A: (360) 920-1226
<< tc@tomcloyd.com >> (email)
<< TomCloyd.com >> (website & psychotherapy weblog) << sleightmind.wordpress.com >> (mental health issues weblog)
<< directpathdesign.com >> (web site design & consultation)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The block form of IO.open returns the value of the block. So, what is the class of archives_stored_catalog? It isn't an IO object. It's your loaded YAML data. So it doesn't have a close method.
Regards
Dave Thomas
···
On Mar 15, 2008, at 8:24 AM, 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:
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.
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.
The block form of IO.open returns the value of the block. So, what is the class of archives_stored_catalog? It isn't an IO object. It's your loaded YAML data. So it doesn't have a close method.
Yeah, that (I said nil, which was an over-generalization from a
case where the block called puts.)
David
--
Upcoming Rails training from David A. Black and Ruby Power and Light:
ADVANCING WITH RAILS, April 14-17 2008, New York City
CORE RAILS, June 24-27 2008, London (Skills Matter)
See http://www.rubypal.com for details. Berlin dates coming soon!
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.
Don't count on it from me, but do you have write permission on the file?
Cheers,
Bob
···
On 15-Mar-08, at 9:33 AM, Tom Cloyd wrote:
t.
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tom Cloyd, MS MA, LMHC
Private practice Psychotherapist
Bellingham, Washington, U.S.A: (360) 920-1226
<< tc@tomcloyd.com >> (email)
<< TomCloyd.com >> (website & psychotherapy weblog) << sleightmind.wordpress.com >> (mental health issues weblog)
<< directpathdesign.com >> (web site design & consultation)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The File.open block version automagically closes the file.
Todd
···
On Sat, Mar 15, 2008 at 8:33 AM, Tom Cloyd <tomcloyd@comcast.net> wrote:
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)}
>
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.
The block form of IO.open returns the value of the block. So, what is the class of archives_stored_catalog? It isn't an IO object. It's your loaded YAML data. So it doesn't have a close method.
Yeah, that (I said nil, which was an over-generalization from a
case where the block called puts.)
David
OK, thanks, that's very clarifying. I utterly missed the fact that I was using a block open. So, once the data's loaded, the file should be closed, and thus available for re-openning.
But it isn't. THAT was my original problem - the reason I was (mistakenly) trying to close it - so I could open it. All this code is in the same method. "archive_stored_list" should be something I can open, but as I said before, upon trying I get a "Permission denied - archive_stored_list.yml" error. I have NO idea why. If I can't open that file, I can't dump my yaml data.
Any ideas?
t.
···
On Sat, 15 Mar 2008, Dave Thomas wrote:
On Mar 15, 2008, at 8:24 AM, Tom Cloyd wrote:
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tom Cloyd, MS MA, LMHC
Private practice Psychotherapist
Bellingham, Washington, U.S.A: (360) 920-1226
<< tc@tomcloyd.com >> (email)
<< TomCloyd.com >> (website & psychotherapy weblog) << sleightmind.wordpress.com >> (mental health issues weblog)
<< directpathdesign.com >> (web site design & consultation)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
Don't count on it from me, but do you have write permission on the file?
Cheers,
Bob
Yes I sure do.
~t .
···
On 15-Mar-08, at 9:33 AM, Tom Cloyd wrote:
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tom Cloyd, MS MA, LMHC
Private practice Psychotherapist
Bellingham, Washington, U.S.A: (360) 920-1226
<< tc@tomcloyd.com >> (email)
<< TomCloyd.com >> (website & psychotherapy weblog) << sleightmind.wordpress.com >> (mental health issues weblog)
<< directpathdesign.com >> (web site design & consultation)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
But it isn't. THAT was my original problem - the reason I was (mistakenly) trying to close it - so I could open it. All this code is in the same method. "archive_stored_list" should be something I can open, but as I said before, upon trying I get a "Permission denied - archive_stored_list.yml" error. I have NO idea why. If I can't open that file, I can't dump my yaml data.
Close the editor reading it? Something is blocking your write access, and it looks like an OS "error", rather than a Ruby error.
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.
Don't count on it from me, but do you have write permission on the file?
But it isn't. THAT was my original problem - the reason I was (mistakenly) trying to close it - so I could open it. All this code is in the same method. "archive_stored_list" should be something I can open, but as I said before, upon trying I get a "Permission denied - archive_stored_list.yml" error. I have NO idea why. If I can't open that file, I can't dump my yaml data.
Close the editor reading it? Something is blocking your write access, and it looks like an OS "error", rather than a Ruby error.
- Phillip Gawlowski
Thanks Phillip - that redirected my attention. It turns out, amazingly enough, that you cannot open a file in a directory where it isn't! I wasn't paying enough attention to my present working directory - it got changed, and I didn't change it back. Doing so fixed the problem. Another first - never had that problem before.
t.
···
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tom Cloyd, MS MA, LMHC
Private practice Psychotherapist
Bellingham, Washington, U.S.A: (360) 920-1226
<< tc@tomcloyd.com >> (email)
<< TomCloyd.com >> (website & psychotherapy weblog) << sleightmind.wordpress.com >> (mental health issues weblog)
<< directpathdesign.com >> (web site design & consultation)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(I said nil, which was an over-generalization from a