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Are empty HTML5 data attributes valid?
...
Just the attribute name. The value is implicitly the empty string.
[...]"
https://developers.whatwg.org/syntax.html#attributes-0
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Net::SMTPAuthenticationError when sending email from Rails app (on staging environment)
...Google will block your sign-in attempt but
You can change your settings at https://www.google.com/settings/security/lesssecureapps so that your account is no longer protected by modern security standards.
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Chaining multiple filter() in Django, is this a bug?
...' a potentially different row that matches B.
Look at the example here:
https://docs.djangoproject.com/en/dev/topics/db/queries/#spanning-multi-valued-relationships
particularly:
Everything inside a single filter() call is applied simultaneously to filter out items matching all those require...
Do Google refresh tokens expire?
...ount Authorized Access page if they would like to manually revoke them."
https://developers.google.com/oauthplayground/
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What ports does RabbitMQ use?
... manual has the answer. It's defined in the RABBITMQ_NODE_PORT variable.
https://www.rabbitmq.com/configure.html#define-environment-variables
The number might be differently if changed by someone in the rabbitmq configuration file:
vi /etc/rabbitmq/rabbitmq-env.conf
Ask the computer to tell yo...
How can you zip or unzip from the script using ONLY Windows' built-in capabilities?
...ovide any executable for this.
See this link for some VBS way to do this.
https://superuser.com/questions/201371/create-zip-folder-from-the-command-line-windows
From Windows 8 on, .NET Framework 4.5 is installed by default, with System.IO.Compression.ZipArchive and PowerShell available, one can wr...
NPM/Bower/Composer - differences?
...pendencies. And yes, they are needed.
Now, what about the READMEs? :-)
https://github.com/bower/bower
https://www.npmjs.org/doc/cli/npm.html
https://getcomposer.org/doc/00-intro.md
[update, four years later]
bower is deprecated, and should not be used anymore for new projects. To a large ext...
Hide/Show Column in an HTML Table
...st('th,td')
var $table = $btn.closest('table')
// get cell location - https://stackoverflow.com/a/4999018/1366033
var cellIndex = $cell[0].cellIndex + 1;
$table.find(".show-column-footer").show()
$table.find("tbody tr, thead tr")
.children(":nth-child("+cellIndex+")")
.hi...
Rails Admin vs. ActiveAdmin [closed]
...he two could be merged, and have just raised the issue on both projects:
https://github.com/sferik/rails_admin/issues/799
https://github.com/gregbell/active_admin/issues/677
I think it would be great to take the best parts from both, and collaborate on the missing pieces.
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Headless Browser and scraping - solutions [closed]
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If Ruby is your thing, you may also try:
https://github.com/chriskite/anemone (dev stopped)
https://github.com/sparklemotion/mechanize
https://github.com/postmodern/spidr
https://github.com/stewartmckee/cobweb
http://watirwebdriver.com/ (Selenium)
also, Nokogiri g...