Order of the state_machine callback chain

Native promises have no methods to inspect their state.

You can use the promiseState function below to check whether a promise is fulfilled, rejected or still pendi...

Use Socket.gethostname. So for a machine whose hostname is "happycat", it will look like this:

>> Socket.gethostname
=> "happycat"

That should work right away for your Rails application. For plain Ruby, you first need to do:

requi...

In order to rename your Ubuntu box, replace all occurences of the the old name in the following two files:

• /etc/hostname
• /etc/hosts

After a reboot your hostname is changed. If you don't want to reboot your Ubuntu box you have to execute ...

Imagine you have a list you want to render inline on large screens, but stacked on small screens.

<ul>
  <li>high</li>
  <li>medium</li>
  <li>low</li>
</ul>

ul { white-space: nowrap } /* optional: keep items in one line no matter th...

Find conditions for scopes can be given either as an array (:conditions => ['state = ?', 'draft']) or a hash (:conditions => { 'state' => 'draft' }). The later is nicer to read, but has horrible security implications in some versions of Ru...

We're pleased to announce Ruby 3’s new language for type signatures, RBS. One of the long-stated goals for Ruby 3 has been to add type checking tooling. After much discussion with Matz and the Ruby committer team, we decided to take the incremen...

Generally for nested forms, a blank form is placed below all other existing object forms. If you would like to change the position of the...

The linked article shows what current browsers do when you click a link like this:

<a href="tel:1-562-867-5309">1-562-867-5309</a>

Spoiler: The current state is sad

It's...

A while back, I had a requirement to persist a record of which email addresses were sent an email through the system. I expected to find callback support for ActionMailer, but was surprised to find that it didn't exist.