Welcome to my personal website. I use this space to share some of my thoughts and software that I write in my free time. Sometimes I also publish photos. If you want to get in touch please use LinkedIn or Mastodon.
Rails provides a great way to check for nil and empty variables in the same call: blank?. This is especially helpful in ERB templates where a variable can be either nil or empty, depending on the object. Without it, the check would look similar to this:
This is quite cumbersome and easy to forget. With blank?, this can be simplified to:
For the following values blank? returns true and false respectively:
About the author
Friedrich Ewald is an experienced Software Engineer with a Master's degree in Computer Science. He started this website in late 2015, mostly as a digital business card. He is interested in Go, Python, Ruby, SQL- and NoSQL-databases, machine learning and AI and is experienced in building scalable, distributed systems and micro-services at multiple larger and smaller companies.