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modern git-academy

Curriculum Index

Current LevelInitiate
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  • 1.1 How Git Actually Works: The Content-Addressable Store
  • 1.2 The Three Trees: Working Directory, Index, and HEAD
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Pillar 1: Git Fundamentals & Internal DAG Architecture•Lesson 2

Working Directory, Index, and HEAD

### The Three States
1. **Working Tree:** The local files you edit on disk.
2. **Index (Staging Area):** The exact snapshot prepared for the next commit via git add.
3. **HEAD:** The pointer referencing your currently checked-out commit.
Python 3.11
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Interactive Challenge
+65 XP
Challenge Objective

Print 'COUNT:3' to confirm the three conceptual trees in Git.

solution.py
UTF-84 SpacesAuto-saved
cpython3.11:~/workspace
CPython 3.11.8 (WASM)
$python3 -u solution.py
Click "Compile & Run" (or press Ctrl + Enter) to compile AST, verify bytecode, and execute the solution.