# Objects
## CS Concepts — The Codex Coding
**URL:** https://thecodex.expert/coding/concepts/objects/
**Type:** concept | **Confidence:** high | **Last verified:** 2026-06-01

## CANONICAL DEFINITION
An object (in the key-value sense) is a collection of named properties stored in a hash table, providing O(1) average-time lookup, insertion, and deletion by string key rather than integer index.

## REQUIRES
concepts/variables, concepts/data-types

## ENABLES
concepts/classes, data-structures/hash-tables

## COMMONLY CONFUSED WITH
Python dict != class instance; JSON != JavaScript; dict keys must be hashable in Python

## SOURCES
- Python Language Reference §3.3 (__hash__)
- PEP 456
- ECMAScript 2024 §6.1.7
- java.util.HashMap javadoc

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