Barby is a great Ruby gem to generate barcodes of all different sorts. It includes support for QR codes via...

Looks like ActiveState is trying to market a new Ruby distribution for Enterprises: ActiveRuby Enterprise Edition is designed for businesses...

There are various ways to run external commands from within Ruby, but the most powerful ones are Open3.capture3 and Open3.popen3...

A collection of code snippets which return a boolean value for a regex comparison. regexp.match?(string) # Recommended for Ruby >= 2.4...

Adding a gem means you take over the liability towards the external code. Checklist Based on "To gem, or not...

Web technology is a broad field and you cannot be an expert in all aspects. However, it is useful to...

Just like we use gems on the server, we use third party JavaScript libraries in the browser. These typically provide...

Advanced cucumber features Learn about the following cucumber features: Doc Strings ("multiline strings") Tables Tags Before/after hooks Background Scenario outlines...

We have projects that have been developed using many different versions of Ruby. Since we do not want to...

On application servers, gems are usually bundled into the project directory, at a location shared across deployments. This is usually...

deadlock 0x7f8a4160a360: sleep:- (main) - /home/me/.rbenv/versions/1.8.7-p375/lib/ruby/gems/1.8/gems/bundler-1.14.3/lib/bundler/worker.rb:43 deadlock 0x7f8a38c03b08: sleep:- - /home/me/.rbenv/versions/1.8.7-p375/lib/ruby/gems/1.8/gems/bundler-1.14.3/lib/bundler/worker.rb:56 *** longjmp causes uninitialized stack frame ***: /home/me/.rbenv/versions/1.8.7-p375/bin/ruby terminated

This error message may occur when rspec gets loaded by rake, e.g. when you migrate the test database. NoMethodError: undefined...

There are some inconvenient Gem dependencies. Resolve them by adding/modifying these lines in your Gemfile: gem 'guard-livereload', '>= 2.5.2', require...

The rack-contrib gem brings a JSONP middleware that just works™. Whenever a JSON request has a callback parameter, it...

TruffleRuby is an experimental Ruby implementation that tries to achieve ~10x performance over MRI. This has been on our radar...

Sometimes huge refactorings or refactoring of core concepts of your application are necessary for being able to meet new requirements...

You may know the double asterisk operator from Ruby snippets like Dir['spec/**/*_spec.rb'] where it expands to an arbitrary...

Ruby's regular expressions can be represented differently. When serializing them, you probably want to use inspect instead of to...

Exercise 1: XML On the start page of your Movie DB, show the title of a random movie that is...

Adopting legacy Rails apps Talk to your mentor about how we're approaching applications that are either old or abandoned...

So you're getting an error like this: undefined method `activate_bin_path' for Gem:Module (NoMethodError)

TL;DR: Update the 'net-ssh' gem by adding to your Gemfile: gem 'net-ssh', '=2.9.1' Now run bundle update...