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Colleen Schnettler on Twitter

Link: Colleen Schnettler on Twitter: "A tricky thing to remember in Active Record is how to query multiple associations vs. nested associations. Multiple associations take a list of symbols, nested associations take a hash with a symbol. pic.twitter.com/XhGiJdcH7h— Colleen Schnettler (@leenyburger) March 3, 2022"

Pid control document

Link: Pid control document: "Excellent tips and ideas"

One of several tips on how to tune PID controllers. PID Controllers are algorithms used in all sorts of control circuits. In my case for the control of a robot motor.

Testing network services in Ruby is easier than you think

Link: Testing network services in Ruby is easier than you think: "You’ve started a new project and it’s time for your code to depend on a third-party service. It could be something like ElasticSearch, Resque, a billing provider, or just an arbitrary HTTP API. You’re a good developer, so you want this code to be well tested. But how do you test code that fires off requests to a service that’s totally out of your control?"