# hatena/Hatena-Textbook

はてな研修用教科書

Repository: https://github.com/hatena/Hatena-Textbook
Canonical: https://ross.abutalabs.com/products/hatena-textbook
License Family: other
Last push: 2021-07-04T09:40:31+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": 5263, "days_push": 1886, "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 2169, forks 146 (observed 2026-08-28T04:06:21.623091+00:00)

## What it is
Hatena's internal engineering training textbook covering programming fundamentals, databases, web application development, frontend, iOS, and machine learning, with exercises in Perl or Scala. Learners progressively build a blog system (Intern-Diary) from a CLI program to a full web application.

## Use cases
- learn web application development from scratch
- train new engineers joining a company
- study Perl or Scala through guided exercises
- learn database programming basics
- build a blog app as a learning project
- onboarding curriculum for junior developers

## When to choose
- you want a structured, exercise-driven curriculum for web development in Perl or Scala
- you are designing an internal engineering training program
- you are a beginner learning programming, databases, and web apps in sequence

## When to avoid
- you need up-to-date material on modern frameworks or current best practices
- you want a course in a language other than Perl or Scala
- you need an actively maintained resource with community support

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: documentation, developer-tools
- domain: tutorials, web-development, education, programming-languages
- platform: cross-platform
- tags: textbook, onboarding, perl, scala, training-material, internship, web-application-development

## Member repositories
- hatena/Hatena-Textbook (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:21.623091+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 2026-08-30T02:49:26.944290+00:00, confidence not recorded.
  - readme: https://github.com/hatena/Hatena-Textbook (fetched 2026-08-28T04:06:21.623091+00:00, sha 0e81684a6bd5)
- Data as of 2026-08-30T08:39:29.467469+00:00.