Start delayed_job in the background

In a web application you sometimes have tasks that can not be processed during a request but need to go to the background.
There are several gems that help to you do that, like Sidekiq or [Resque](https://git...

I've written about the problem with user stories before. At the time, I found it better to just have the team talk over proposed changes to the product. This worked great when the team had gelled and the product is very mature; however, now I'm ...

Now in 2010, the iPad takes the same ideas to their logical extreme. It is a beautiful and nearly perfect machine. It is also Jobs' final triumph, the final step in Apple's evolution away from Wozniak and toward a closed model.

This article shows how to create a Sass mixin for a colored button. The button's foreground color is dynamically chosen between either black or white, depending on the given background color.

It's a nice intro into @if and @else conditionals ...

You can scale background images in CSS to the container size using background-size (Demo).

Commonly, we use contain or cover because we want to preserve the ima...

Ruby has two different ways to match the start and the end of a text:

• ^ (Start of line) and $ (End of line)
• \A (Start of string) and \z (End of string)

Most often you want to use \A and \z.

Here is a short example in which we wa...

Is your application doing something expensive every few seconds? Maybe an animated slider that rotates images? Maybe you are updating data over the network every five minutes?

It's a good idea to pause this if the your document tab is not eve...

This plugin makes it easy to add fit-to-fill background video to websites. It can play silent ambient background video (or series of videos). Or use it as a player to show video playlist. BigVideo.js can also show big background images, which is n...

• You might have notices this behavior when you cut a selection or use the rubber tool.
• The behavior depends on whether your images has an alpha channel.
• You can add an alpha channel by choosing Layer → Transparency → Add alpha channel

Since version 2.6 exception notifier distinguishes between foreground and background sections. The reason is that with background jobs (e.g. methods that are called by a cron job) some variables are not available for exception notifier, e.g. `@req...