A common theme in dynamic programming algorithm questions on Leetcode or in job interviews, is that the underlying problem is some twist on or manipulation of the numbers of the Fibonacci sequence. The Fibonacci sequence is a series of numbers where the next number is the sum of the previous…

Have you ever tried to set the results of a fetch to a variable, but once you run your code the variable does not contain any data you hoped to get back? If you log your variable to the console or check it in a debugger, you may notice your…

When creating a Ruby on Rails backend, you may want to utilize an external API or set up JWT. In the case of an external API you will likely need an API key when making requests to the server. If this key is exposed to the public and someone were…

You may have set up a Rails project using the default values, but now want to deploy it to a hosting site such as Heroku. If you follow the instructions on Heroku to push your project to their site you may receive the following error: …

As your webpage grows in size, it may become more difficult to grab the elements you’d like to edit. Javascript gives you multiple powerful tools to select the items you’re looking for, but it can be confusing on which one to use. …

Do you have a large excel file that you would like to get into your ruby program or rails database? There’s a gem for that! Either install the csv gem and require it, or add it to your Gemfile. $ gem install csv #in your .rb file require ‘csv’ or…