Immutable

How it is used

Used in state management, concurrent code and API design. Updating immutable data usually means creating a new value rather than modifying the old one.

Example sentences

1. The reducer returns a new immutable state object after each action.

2. An immutable configuration prevents one request from changing another request's settings.

Common collocations

• immutable object
• immutable data
• immutable state

Related terms

• mutableDescribing a value or object whose state can be changed after it has been created.
• objectA unit in a program that groups related data and the functions that work on it, for example a user object with a name, an email and a login method.
• stateThe data an app or component holds at a given moment, such as whether a menu is open or what a user has typed, which controls what is shown.

This word in other fields

The same English word can have a different meaning in another field:

• immutable · Blockchain & Crypto

More terms: Programming Concepts

• function
• variable
• codebase
• library
• call
• loop
• class
• parameter
• IDE
• compile
• string
• boolean