What is Function?
In code, a reusable named block that takes inputs, runs steps, and often returns a result.
area(3, 4) → 12 · reused
In real work
Ask the agent to extract the duplicated logic into one function before you approve the PR.
In the illustration
Blocks 3 and 4 drop into the sockets, the gears turn once, a 12 tile drops out the chute; then 2 and 5 go in and the same press makes 10.
Extract the date formatting into its own function in your coding agent, name it, and call it from the three places that repeat it.
Try it now
The fastest way to learn a word is to use it. Open this line in the agent you already work in and watch what it does. Change the tool to the one you use.
Go further
01Practice
Make it stick
One term a day, a short quiz, and sentence practice that checks your own words.
02Verify
Prove you know it
Pass the quiz and keep it in a Skills Wallet you can share with anyone who needs proof.
03Career
Find the work that uses it
See which roles lean on this vocabulary, and what they pay in year one.
More in Code Literacy
All terms →
Learn the next term tomorrow.
Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews. Then it quizzes you until the word sticks. One term a day on iPhone.
