Jeff Kreeftmeijer

• 07/2019 Building the Go Game in Elixir: Time Travel and the Ko Rule for Elixir Alchemy
• 06/2019 Building the Go Game with Phoenix LiveView for Elixir Alchemy
• 05/2019 Inside Enumeration in Ruby for Ruby Magic
• 03/2019 Iteration, recursion, and tail-call optimization in Elixir for Elixir Alchemy
• 02/2019 Unraveling Classes, Instances and Metaclasses in Ruby for Ruby Magic
• 01/2019 Serving Plug: Building an Elixir HTTP server from scratch for Elixir Alchemy
• 01/2019 Bindings and lexical scope in Ruby for Ruby Magic
• 11/2018 Consistent terminal colors with 16-ANSI-color Vim themes
• 10/2018 Hot code reloading in Elixir for Elixir Alchemy
• 09/2018 How OTP applications are structured for Elixir Alchemy
• 09/2018 Closures in Ruby: Blocks, procs and lambdas for Ruby Magic
• 07/2018 “Slurping” and streaming files in Ruby for Ruby Magic
• 06/2018 Deconstructing GenServers for Elixir Alchemy
• 05/2018 Ruby's magical Enumerable module for Ruby Magic
• 10/2017 Find, convert and replace dates with Vim substitutions
• 09/2017 Keeping open source software projects maintainable
• 08/2017 Property-based testing in Elixir using PropEr
• 05/2017 Demystifying processes in Elixir for Elixir Alchemy
• 01/2017 Building a Ruby HTTP server: Running Rails apps for Ruby Magic
• 11/2016 Building a 30-line HTTP server in Ruby for Ruby Magic
• 10/2015 “git is not a git command”
• 09/2014 Checking if an ActiveRecord model instance was destroyed
• 09/2014 Using Rails test fixtures with CarrierWave
• 04/2013 On the death of ifs
• 06/2012 Preloading dependencies for faster test suite start-up times
• 01/2012 Vim’s absolute, relative and hybrid line numbers
• 11/2011 Method chaining and lazy evaluation in Ruby
• 10/2011 MicroGems: five minute RubyGems
• 07/2011 The pain of JSON API testing
• 04/2011 Comparing images and creating image diffs in Ruby
• 11/2010 Fuubar: the instafailing RSpec progress bar formatter
• 11/2010 Stop RSpec on the first failure with the --fail-fast command line option
• 10/2010 Git rebase: reapply your changes onto another branch
• 08/2010 Using git-flow to automate your git branching workflow