Glossary term
What is Reducer?
In Apex Flow Academy, "Reducer" means: A function that takes the current state and an action and returns the next state. It only computes and changes nothing else. It is taught in React and Next.js: Build Modern Web Apps. Related terms include Mutate, Context, Derived value and Effect. Every Apex Flow Academy course lists the official sources it checked.
- 1 course teaches it
- plain-word definition
The facts
What is Reducer?
A function that takes the current state and an action and returns the next state. It only computes and changes nothing else.
Where is Reducer taught?
Reducer is defined in React and Next.js: Build Modern Web Apps.
Which lessons cover Reducer?
These lessons name it in their title or objectives:
- React and Next.js: Build Modern Web Apps, lesson 3.2: Reducers: one place for every change
Which terms are related to Reducer?
Next to Reducer in the course glossaries: Mutate, Context, Derived value, Effect, Event handler, localStorage, Hook and Hydration.
MutateContextDerived valueEffectEvent handlerlocalStorageHookHydration
The hard questions, answered straight
Bold questions people really ask. Each answer comes from the course data or a settled Academy fact.
Do I need experience before I learn Reducer?
It depends on the course. Each course that teaches it lists its own prerequisites, and all are listed at intermediate level:
- React and Next.js: Build Modern Web Apps: Basic JavaScript: you can write a function, use variables with const and let, work with arrays and objects, and have seen map and filter. Modules 1 and 2 explain destructuring and spread the first time they appear.