# mcpp-community/d2mcpp

D2X | Modern C++ Core Language Features - "A C++ tutorial project focused on practical"

Repository: https://github.com/mcpp-community/d2mcpp
Canonical: https://ross.abutalabs.com/products/d2mcpp
Homepage: https://mcpp.d2learn.org
Language: C++
License: NOASSERTION
License Family: other
Topics: course, cpp, d2x, exercises, modern-cpp, open-source, tutorial, video, xlings
Last push: 2026-08-02T04:33:57+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 95, release rhythm 35, longevity 36
- inputs: {"age_days": 508, "days_push": 31, "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 1751, forks 114 (observed 2026-08-28T04:05:31.692919+00:00)

## What it is
D2X (d2mcpp) is an interactive tutorial project for learning Modern C++ core language features, combining a book, videos, and hands-on coding exercises checked automatically via the d2x/xlings toolchain. It is developed by the mcpp community and is currently in early development.

## Use cases
- learn modern C++ features interactively
- practice C++ with auto-checked exercises
- beginner-friendly modern C++ tutorial
- learn C++23 modules and core language features
- improve at reading compiler error messages
- find a structured C++ learning course with book and videos

## When to choose
- you want hands-on, exercise-driven C++ learning similar to Rustlings
- you want to learn Modern C++ (C++11 through C++23) with book, video, and code combined
- you want to practice debugging via compiler error messages
- you prefer running exercises locally or in GitHub Codespaces

## When to avoid
- you need a stable, finished course - the project is in early development
- you want a C++ reference manual rather than a guided tutorial
- you need production C++ libraries or tooling

## Facets
- artifact type: learning-resource
- maturity: active
- function: developer-tools, cli
- domain: education, programming-languages, tutorials, developer-tools
- platform: cpp, cross-platform, windows, cli
- tags: modern-cpp, interactive-tutorial, exercise-checker, rustlings-style, cpp23, d2x, xlings, book-and-video-course, linux, macos

## Member repositories
- mcpp-community/d2mcpp (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:31.692919+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 2026-08-30T03:28:33.543891+00:00, confidence not recorded.
  - readme: https://github.com/mcpp-community/d2mcpp (fetched 2026-08-28T04:05:31.692919+00:00, sha 2f29f0cb1a3a)
  - homepage: https://mcpp.d2learn.org (fetched 2026-08-29T11:06:26.952313+00:00, sha 4dea016eba8f)
  - site_page: https://mcpp.d2learn.org/docs/base/intro.html (fetched 2026-08-29T11:06:26.961290+00:00, sha 2d179bb757bb)
  - site_page: https://mcpp.d2learn.org/pages/about/intro.html (fetched 2026-08-29T11:06:26.963182+00:00, sha a175ecbb899f)
  - site_page: https://mcpp.d2learn.org/pages/about/history.html (fetched 2026-08-29T11:06:26.965035+00:00, sha c6e6ea2fca84)
- Data as of 2026-08-30T08:39:29.467469+00:00.