# fool2fish/dragon-book-exercise-answers

Compilers Principles, Techniques, & Tools (purple dragon book) second edition exercise answers. 编译原理（紫龙书）第2版习题答案。

Repository: https://github.com/fool2fish/dragon-book-exercise-answers
Canonical: https://ross.abutalabs.com/products/dragon-book-exercise-answers
Language: HTML
License Family: other
Last push: 2024-05-15T17:34:21+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4987, "days_push": 840, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6649, forks 1763 (observed 2026-08-28T04:09:47.308883+00:00)

## What it is
A community-maintained collection of exercise answers for the second edition of the Compilers: Principles, Techniques, & Tools textbook (the 'purple dragon book'). Answers are written in HTML with graphs drawn in yEd, plus key-point summary notes per chapter.

## Use cases
- find solutions to dragon book compiler exercises
- study compilers principles techniques and tools second edition
- check my compiler theory homework answers
- review key points of each dragon book chapter
- self-study compiler construction course material

## When to choose
- you are self-studying the purple dragon book and want worked exercise answers
- you need supplementary notes on difficult compiler concepts
- you are a student checking your own solutions

## When to avoid
- you need an official or instructor-verified answer key
- you want a compiler tool or library rather than study material
- you need answers for a different compilers textbook

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: documentation
- domain: compilers, education, tutorials
- platform: -
- tags: dragon-book, compilers, exercise-answers, textbook-solutions, study-notes, education, web

## Member repositories
- fool2fish/dragon-book-exercise-answers (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:47.308883+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:43:07.967241+00:00, confidence not recorded.
  - readme: https://github.com/fool2fish/dragon-book-exercise-answers (fetched 2026-08-28T04:09:47.308883+00:00, sha 204d594495ea)
- Data as of 2026-08-30T08:39:29.467469+00:00.