cortesi - The impact of language choice on github projects
Are there major differences between projects in different languages? Is it possible to quantify these differences? I decided to try to gather some hard numbers.
Related cards:
Rails: Custom validator for "only one of these" (XOR) presence validation
For Rails models where only one of multiple attributes may be filled out at the same time, there is no built-in validation.
I've seen different solutions in the wild, each with different downsides:
- Private method referenced via
validate: wor...
makandra cards: A knowledge base on web development, RoR, and DevOps
What is makandra cards?
We are makandra, a team of 60 web developers, DevOps and UI/UX experts from Augsburg, Germany. We have firmly anchored the sharing of knowledge and continuous learning in our company culture. O...
Lightning Talk: Coverage based Test Case Prioritization in Ruby on Rails
For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra. It has been written as a Ruby Gem and was tested and evaluated against one Ruby on Rails project....
The Ruby Object Model
In Ruby (almost) everything is an Object. While this enables a lot of powerful features, this concept might be confusing for developers who have been programming in more static languages, such as Java or C#. This card should help understanding t...
Generating and streaming ZIP archives on the fly
When your Rails application offers downloading a bunch of files as ZIP archive, you basically have two options:
- Write a ZIP file to disk and send it as a download to the user.
- Generate a ZIP archive on the fly while streaming it in chunks t...
The Origins of Scala
When Java first shipped, Bill Joy and James Gosling and the other members of the Java team thought that Java should have generics, only they didn't have the time to do a good job designing it in. So because there would be no generics in Java, at l...
Felix von Leitner on the only approach to manageable systems // plasmasturm.org
Professionals can be recognised by the fact that they minimize complexity. Small modules, complete isolation of modules, minimal (in number and size) interfaces. Bunglers can be recognised by the fact that they launch Visio when they plan their pr...
RSpec: Leverage the power of Capybara Finders and Matchers for view specs
View specs are a powerful tool to test several rendering paths by their cases instead of using a more costing feature spec. This is especially useful because they become quite co...
How to tackle complex refactorings in big projects
Sometimes huge refactorings or refactoring of core concepts of your application are necessary for being able to meet new requirements or to keep your application maintainable on the long run. Here are some thoughts about how to approach such chall...
JavaScript: Testing whether the browser is online or offline
You can use the code below to check whether the browser can make connections to the current site:
await isOnline() // resolves to true or false
Limitations of navigator.onLine
While you can use the...