In one of my previous posts I wrote down the impressions about Hanami I’ve had while working on my side project, Flashcard Genius. One of… — In one of my previous posts I wrote down the impressions about Hanami I’ve had while working on my side project, Flashcard Genius. One of the things I mentioned there was that some features you’d expect from a framework are missing or underdocumented. …

I remember hearing about Hanami framework for the first time. It was a few years ago, during a talk on Wroclove.rb conference. It didn’t… — I remember hearing about Hanami framework for the first time. It was a few years ago, during a talk on Wroclove.rb conference. It didn’t really catch my attention back then as I was still a newbie in the Ruby world. …

Building C extensions in Ruby isn’t really that hard. Let me show you how I built my first one. — A few months ago I’ve read a book by Pat Shaugnessy called Ruby Under Microscope. It taught me a lot about Ruby’s internals and inspired to dive a bit deeper than normally and try building an extension to the language. As most of Rubyists know Ruby is a language originally…

Check out how I managed to make use of lazy enumerators to FTP stream, ungzip and process a huge CSV file line by line. — Today I’d like to share with you a solution to a problem that gave me some headache recently, so you can spend your time on something more interesting (have a ☕ or something). The task The goal was to write a rake task that’d: 1. Fetch a big (1GB gzipped) CSV file from…

Check out how codewars.com can help you improve your programming skills and have lots of fun at the same time! — A few months ago my sister told me to check out a website called codewars.com. It introduced a lot of fresh air to my “boring programmer’s life”, so I decided to share some of my feelings with you. Codewars is a platform for software developers on which people can solve…

In Leadfeeder we develop our frontend app in Ember.js backed by a Ruby on Rails JSON API. Personally I think it’s a great choice of stack… — In Leadfeeder we develop our frontend app in Ember.js backed by a Ruby on Rails JSON API. Personally I think it’s a great choice of stack as it lets developers quickly deliver new features without writing tons of code. …

Learn how write a retriable UrlFetchApp requests batch in Google Apps Scripts — While writing Google Data Studio connectors I needed to fire lots and lots of HTTP requests using UrlFetchApp in order to gather all the necessary data for my reports. Initially I used fetch method that allows only one, synchronous request. Later, when my connector was ready I wanted to speed…

Learn how I used batch loading technique to solve N+1 queries problem in Rails apps that use ActiveModel::Serializers gem. — TLDR: Use ams_lazy_relationships gem ( https://github.com/Bajena/ams_lazy_relationships) to eliminate N+1 queries in ActiveModel::Serializers 🎉 Quick intro to batch loading A few months ago I came across a post by exAspArk explaining how they built and used the BatchLoader gem to optimize the number of database queries in their apps.