Use pry or byebug when the Ruby ‘app’ doesn’t use Bundler nor the Gemfile

I'm working through Ruby Koans where each koan contains several test cases. These group of test cases can show the workings of a Ruby object, like string. So newcomers to Ruby can learn its syntax, objects, and testing. And they also interact with actual Ruby files, which is different to the Interactive Ruby Shell (irb). … Continue reading Use pry or byebug when the Ruby ‘app’ doesn’t use Bundler nor the Gemfile

Version ‘x.x.x’ is ambiguous. Cannot select Ruby implementation/version, please be more specific.

The error appears on the console whenever you navigate to the root of a Rails application and you've specified the Ruby version in the Gemfile. You're also using rvm. The error happens when rvm¬†has problems loading the ruby version you had specified in the Gemfile. Try to run rvm all do gem list error to … Continue reading Version ‘x.x.x’ is ambiguous. Cannot select Ruby implementation/version, please be more specific.