Boot partitions from installations prior to the 16.04 era are terribly small. When you install updates and encounter errors due...
geordi delete_dumps [directory] Recursively search for files ending in *.dump and offer to delete those. When no...
Rails offers a way to prepend (or append) view paths for the current request. This way, you can make the...
When you have string contents (e.g. a generated binary stream, or data from a remote source) that you want to...
Form fields can be rendered as noneditable by setting the disabled or the readonly attribute. Be aware of the differences...
Trying to open a vnc window with geordi geordi vnc ended up with this error: > VNC viewer could not be...
mysql> SELECT @@global.version; +------------------+ | @@global.version | +------------------+ | 5.6.30 | +------------------+ 1 row in set (0,00 sec) MySQL 5.6 Reference Manual says "BLOB and TEXT...
If you want to make a screenshot of a website that works well in print or on a high-DPI...
When a Rails controller action should handle both HTML and JSON responses, do not use request.xhr? to decide that. Use...
If one etcd node is no longer a member of the remaining etcd cluster or fails to connect you need...
About-Payments is here to help you to accept payments online and find the best payment service provider for your...
TL;DR Use user.update!(remove_avatar: true) to delete attachments outside of forms. This will have the same behavior as...
This is painful. Consider using Microsoft Office or switching careers. If you need to write < 20 letters consider doing it...
When making requests using curl, no cookies are sent or stored by default. However, you can tell curl to re...
You should avoid using application models in your migrations. But how else could you create records in a migration?
When you print (or print preview) and elements are cut off (e.g. after 1st page, or "randomly") you should check...
By default, browsers will not wrap text at syllable boundaries. Text is wrapped at word boundaries only. This card explains...
Summary: Don't add chromedriver-helper to the Gemfile the executables might break your tests in projects where chromedriver-helper...
We're usually running Ubuntu LTS versions. Sometimes newer hardware requires packages from more recent Ubuntu releases that only come...
Checking if a JavaScript value is of a given type can be very confusing: There are two operators typeof and...
An end-to-end test (E2E test) is a script that remote-controls a web browser with tools like Selenium...
When your public-facing application has a longer downtime for server maintenance or long migrations, it's nice to setup...
Slides for Henning's talk on Sep 21st 2017. Understanding sync vs. async control flow Talking to synchronous (or "blocking...
If you are using PDFKit / wkhtmltopdf, you might as well want to use custom fonts in your stylesheets. Usually this...