# Programs Do Things

By Corey J. Gallon · 2024-08-24 · https://gallon.me/programs-do-things.html

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# Programs Do Things
> “Every system is built from a domain specific language designed by the programmers to describe that system. Functions are the verbs of that language, and classes are the nouns.”  — Robert C. Martin, Clean Code.

![Programs Do Things](https://gallon.me/images/20240824_programs_do_things.png)

Functions are the verbs of your programs. They “do” work.

Classes are the nouns of your programs. They are the “things” that functions do work on.