ERB
ERB (Embedded Ruby) is a templating system in Ruby that allows embedding Ruby code within text documents, typically HTML, to generate dynamic content. It is part of the Ruby standard library and is widely used in web frameworks like Ruby on Rails to separate logic from presentation. ERB processes templates by evaluating Ruby expressions and statements enclosed in special tags, outputting the result into the final document.
Developers should learn ERB when building Ruby-based web applications, especially with Ruby on Rails, as it is the default templating engine for rendering views. It is essential for creating dynamic web pages by integrating Ruby logic directly into HTML, making it ideal for server-side rendering and generating content based on user input or database queries. Use cases include building web interfaces, email templates, and configuration files that require dynamic data insertion.