What is State?
Lets an object change behavior when its internal mode changes. Each mode lives in its own type instead of giant switches.
paid · only ship unlocked
State pattern replaces huge…
Write it in your own words in the app.
In real work
State: Order moves from Draft to Paid to Shipped, and each state handles only its allowed actions.
In the illustration
In Draft the edit handle moves freely; the drum rotates to Paid, the edit handle locks and only the ship handle unlatches.
Refactor the upload flow in your coding agent into the state pattern: Idle, Uploading, Paused and Failed each as their own type, with the transitions in one table.
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.
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.
