Interpreter

This design pattern may seem either very simple or very hard, based on how much background you have in computer science. Some books that discuss classical software design patterns even decide to omit it altogether or put it somewhere at the end, for curious readers only.

The reason behind this is that the Interpreter design pattern deals with translating specific languages. But why would we need that capability? Don’t we have compilers to do that anyway?

Developers often find themselves juggling multiple languages and dialects. For instance, even if you’re working primarily in one language, tools like Maven or Gradle require you to get acquainted with their specific syntax in configuration files and build scripts. Misplace a single element, and your project could fall apart. This is because these tools have interpreters that meticulously read and execute these files.

Consider query languages too. Whether it’s a variation of SQL or a language...