If your external displays not switching on or showing a weird behavior (for e.g. all displays getting the same configuration...
There is no CSS selector for matching elements that contains a given string ¹. Luckily, Capybara offers the :text option to...
This might be relevant for us since we're often managing customer documents in our apps. I played around with...
Icomoon.io offers a free app to build custom icon webfonts. It offers downloads as webfont set (.eot, .ttf, .woff, .woff2...
AWstats is build to regularly run on webservers. If you want it to build a report once, here is the...
Isolate scopes offer three kinds of variable binding. One of them is &, allowing to bind a property of the isolate...
Piwik is the leading open-source analytics platform. As such, it is an alternative to Google Analytics. Since it is...
By convention, common protocols use a defined port, like 80 for HTTP or 443 for HTTPS. You can use nmap...
You can define methods using def or define_method. In the real world, there is no performance difference.
Converting string characters to or from their integer value (7-bit ASCII value or UTF-8 codepoint) can be done...
to create a Gallery that has a name and has_many :images, which in turn have a...
TL;DR If you want to support most browsers, then don't exceed 50 cookies per domain, and don't...
ActiveRecord offers an explain method similar to using EXPLAIN SQL statements on the database. However, this approach will explain all...
When building a form with a file select field, you may want to offer your users a live preview before...
To upload a file via AJAX (e.g. from an ) you need to wrap your params in a FormData object.
TL;DR There are three dimensions you can control when scoping routes: path helpers, URL segments, and controller/view module.
PostgreSQL offers a really handy field type: json. You can store any JSON there, in any structure. While its flexibility...
You know that Devise offers RSpec test helpers for controller specs. However, in request specs, they will not work.
With "attaching an event handler once" you possibly mean one of these two things: Register a function for an event...
Note This card does not reflect the current state of lazy loading technologies. The native lazy attribute could be used...
Sometimes you just want to have a small web server that serves files to test something. Serve the current directory...
While you usually do not need a Content-Type on GET request (which have a blank body), an external API...
PostgreSQL's array data type is pretty useful, but manipulating values of arrays can be awkward because of its syntax...
When a method has keyword arguments, Ruby offers implicit conversion of a Hash argument into keyword arguments. This conversion is...