Disclaimer This card is a collection of guides and things to have in mind when upgrading to a specific version...
Besides Plotting graphs in Ruby with Gruff, which comes handy for many uses cases, you sometimes might need configuration for...
Both knapsack and parallel_tests have the option to split groups by historic execution time. The required logs for this...
For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra...
Newest versions of Chromedriver breaks the user agent for device emulation via device name. In previous versions the user agent...
Note: You won't need this for single lines of text. In this case it is better to just use...
Git log offers useful options for filtering. This card provides a short overview. By message Only commits that include a...
When you write your next CarrierWave uploader, consider processing your images with libvips instead of ImageMagick. Reasons for libvips
Using querySelector or querySelectorAll in JavaScript, you can easily find descendants of a node that match a given selector.
Splitting up commits makes the process of reviewing often easier, since you can create several merge requests or review every...
It most cases it's not necessary to add a version constraint next to your packages in the package.json. Since...
I recently noticed that better_errors allows you to to open files from within your favorite editor. However it was...
Within Capybara you most certainly use the #check- and #uncheck-method to (un)check checkboxes. But there's one problem...
tl;dr Individual transform properties are great because they allow you to write more readable and maintainable CSS, especially when...
Sidekiq 7 adds a new feature called capsules. Use cases: a chrome queue limited to 1 for e.g. PDF processing...
In Ruby on Rails ActiveRecord::Relation#merge overwrites existing conditions on the same column. This may cause the relation to...
Usually you add errors to :base in ActiveRecord, in case no appropriate attribute could be used to add the error...
Maintaining larger projects makes it more difficult to balance refactoring and upgrade tasks according to its actual value. Consider to...
Let's say we have posts with an attribute title that is mandatory. Our example feature request is to tag...
If you need a sample video with certain properties for a test you can create one using ffmpeg.
This is a checklist I use to work on issues. For this purpose I extracted several cards related to the...
Carrierwave's BaseUploader can have some validations that you can use by overriding a certain method, which's expected name...
Sometimes, the rails dev server doesn't terminate properly. This can for example happen when the dev server runs in...
The linked article found a simple way to rewrite legacy git aliases to make them work with differently named default...