We generally use multiple application servers (at least two) and you have to search on all of them if you...
If you have a replication error with MySQL and you know the "error" is okay (e.g. you've executed the...
This error message may occur when rspec gets loaded by rake, e.g. when you migrate the test database. NoMethodError: undefined...
Reminder of what you can do with Geordi. Note: If you alias Geordi to something short like g, running commands...
Sometimes huge refactorings or refactoring of core concepts of your application are necessary for being able to meet new requirements...
You may know the double asterisk operator from Ruby snippets like Dir['spec/**/*_spec.rb'] where it expands to an arbitrary...
Ruby's regular expressions can be represented differently. When serializing them, you probably want to use inspect instead of to...
In general, you should not put a block element inside an inline element. So don't do this: text
If you get an error like this for a puppet mount: $ > puppet agent --test Info: Retrieving pluginfacts Info: Retrieving plugin...
So you're getting this failure when running bundle install on an older project: Your Gemfile.lock is corrupt. The following...
This card tries to summarize by example the different uses of heredoc. In Ruby << vs. <<- vs. <<~ In Rails strip_heredoc...
The linked article states that CSS breakpoints should group "similar" screen sizes and thus be at: 600px "narrow"
TL;DR Debugging problems with javascript errors in cucumber tests is sometimes easier in the browser. Run the test, stop...
If your external displays not switching on or showing a weird behavior (for e.g. all displays getting the same configuration...
When running tests via parallel_tests, you may encounter an error: cannot load such file -- parallel_tests/gherkin/runtime_logger Error creating formatter...
When testing your command line application with Aruba, you might need to stub out other binaries you don't want...
When you're writing specs for ActiveRecord models that use memoization, a simple #reload will not do: it 'updates on...
We used zeroclipboard.js in some of our projects but now we switched to clipboard.js because it does not rely on...
Yesterday I stumbled across a talk in which the guy mentioned module sub-classing. I was curious what you can...
In order to have monitoring for Sidekiq (like queue sizes, last run of Sidekiq) your application should have a monitoring...
Instantiating ActiveRecord objects comes expensive. To speed up things, you can choose a more direct way to talk to your...
When working with custom transactions and use ActiveRecord::Rollback you may encounter unexpected behaviour if you try to roll back...
VCR lets you configure how it matches requests to recorded cassettes: In order to properly replay previously recorded requests, VCR...
If you want to find the commits that touched a specific text in a file, use git log -S 'text...