Ruby Memoization: ||= vs. defined? syntax - Karol Galanciak - Distributed Systems Architect and Ruby on Rails expert
In the majority of the Rails applications or even Ruby gems you can find a lot of use cases where you need to memoize a result of some computation for performance benefits and to not compute it again if this result has already been computed. Seems like doing the assignment to some instance variable with ||= operator is the most commonly used solution for this purpose, e.g. @result ||= do_some_heav
Decoding Rails Magic: How Does ActiveJob work?
Executing background jobs is quite a common feature in many of the web applications. Switching between different background processing frameworks used to be quite painful as most of them had different API for enqueuing jobs, enqueuing mailers and scheduling jobs. One of the great addition in Rails 4.2 was a solution to this problem: ActiveJob, which provides extra layer on top of background jobs f
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How to tell the difference between a default and a provided value for optional arguments in Ruby?
Do. Or do not. There is no try - Object#try considered harmful - Karol Galanciak - Ruby on Rails and Ember.js consultant
Scaling Up Rails Applications With PostgreSQL Table Partitioning - Part 2
