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Debugging Why Your Specs Have Slowed Down
On a recent project, a client’s test suite had slowed down to a painful 15 minutes even when running with parallelization. It was great to see that the team maintained a balanced testing pyramid, but we were surprised by the completion times of ev...
yield_self in Ruby 2.5 // Michał Łomnicki
At first, it doesn’t look like a noticeable feature. It just returns what the block returns. However it turns out that it’s akin to the pipe operator known from F.
Visualizing Your Ruby Heap
Objects are allocated in to a page. Each page is 2 ^ 14th bytes. In other words, Ruby objects aren’t allocated one at a time, but the GC allocates one page (also known as an “arena”), and when a new Ruby object is requested, it is placed inside th...
ML Basics: K Nearest Neighbors
One of the things I like about the Google Cloud Developer Advocacy team is that many of us have a similar sense of humor. Last year we had an ongoing joke about what the D.
Ruby: pass by value or pass by reference?
When developers switch to a new language, that's one of the questions they try to figure out: does it pass arguments by value or by reference? Ruby has a quite interesting answer to that question so let's find out how it works.
15 Things To Do With Ruby Awesomeness
1. Make an app that texts you every time Brad Pitt tweets.2. Scrape any website on the Internet with only a few lines of code (seriously, it’s soooo easy).3. Play Hackety Hack.4. Spend your days stockpiling Gems.5. Make fancy client websites with ...
Drifting Ruby | Auditing with Paper Trail
Using the paper_trail gem, track changes to model records for auditing purposes and rollback changes when required.
Elm components in a Rails application
Yesterday, we saw how to use React inside our Rails app. Today we will see how simple it is to use Elm components in our Rails 5.1 application.Let's create a Rails application, and we will pass elm as a webpack parameter.
Writing a Ruby Library in Crystal
I was sold because it has Ruby style syntax and you can compile it to a single binary to run anywhere similar to Go. Imagine you don’t need to install rvm, chruby or Gems, you simply compile the binary for your architecture and stick it on a serve...
Code simplicity - Command pattern
Targeting junior developers, this article shows a simple technique to declutter controllers through the addition of a simple object.
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