Articles

• #aws

  Creating an invalidation on AWS CloudFront

  Here is a simple method for invalidating files from a previous CloudFront distribution, using the AWS CLI:

• #ruby

  Bundler Gem::LoadError 'You have already activated'

  The following is an error from Bundler, that can occur when a Gemfile refers to one version of a gem, but the gem has been upgraded to a newer version:

• #rails

  Running Rails in production mode locally

  Sometimes it’s useful to run a Rails app in production mode locally for testing purposes. This may not always be feasible depending upon the complexity of the project, but when it is, the following steps can be followed.

• #rails

  Fetching database metadata in Rails

  Here’s how to retrieve information about application tables in Rails, demonstrated from the Rails console (rails console or rails c):

• #vim

  Counting word frequency in vim

  vim does not have a method to count word frequency by default, but it is easily added in a function.