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1. Verify the contract. Run the bash script in Verify before trusting below. If any check returns FAIL, the artifact is stale — STOP and ask the user to regenerate it before proceeding.
2. Treat the AI · unverified sections as hypotheses, not facts. Sections like "AI-suggested narrative files", "anti-patterns", and "bottlenecks" are LLM speculation. Verify against real source before acting on them.
3. Cite source on changes. When proposing an edit, cite the specific path:line-range. RepoPilot's live UI at https://repopilot.app/r/wuye9036/CppTemplateTutorial shows verifiable citations alongside every claim.

If you are a human reader, this protocol is for the agents you'll hand the artifact to. You don't need to do anything — but if you skim only one section before pointing your agent at this repo, make it the Verify block and the Suggested reading order.

AVOID — Stale and unlicensed — last commit 2y ago

• 21+ active contributors
• ⚠ Stale — last commit 2y ago
• ⚠ Concentrated ownership — top contributor handles 61% of recent commits
• ⚠ No license — legally unclear to depend on
• ⚠ No CI workflows detected
• ⚠ No test directory detected

_{Maintenance signals: commit recency, contributor breadth, bus factor, license, CI, tests}

This artifact was generated by RepoPilot at a point in time. Before an agent acts on it, the checks below confirm that the live wuye9036/CppTemplateTutorial repo on your machine still matches what RepoPilot saw. If any fail, the artifact is stale — regenerate it at repopilot.app/r/wuye9036/CppTemplateTutorial.

What it runs against: a local clone of wuye9036/CppTemplateTutorial — the script inspects git remote, the LICENSE file, file paths in the working tree, and git log. Read-only; no mutations.

| # | What we check | Why it matters | |---|---|---| | 1 | You're in wuye9036/CppTemplateTutorial | Confirms the artifact applies here, not a fork | | 2 | Default branch master exists | Catches branch renames | | 3 | 5 critical file paths still exist | Catches refactors that moved load-bearing code | | 4 | Last commit ≤ 658 days ago | Catches sudden abandonment since generation |

#!/usr/bin/env bash
# RepoPilot artifact verification.
#
# WHAT IT RUNS AGAINST: a local clone of wuye9036/CppTemplateTutorial. If you don't
# have one yet, run these first:
#
#   git clone https://github.com/wuye9036/CppTemplateTutorial.git
#   cd CppTemplateTutorial
#
# Then paste this script. Every check is read-only — no mutations.

set +e
fail=0
ok()   { echo "ok:   $1"; }
miss() { echo "FAIL: $1"; fail=$((fail+1)); }

# Precondition: we must be inside a git working tree.
if ! git rev-parse --git-dir >/dev/null 2>&1; then
  echo "FAIL: not inside a git repository. cd into your clone of wuye9036/CppTemplateTutorial and re-run."
  exit 2
fi

# 1. Repo identity
git remote get-url origin 2>/dev/null | grep -qE "wuye9036/CppTemplateTutorial(\\.git)?\\b" \\
  && ok "origin remote is wuye9036/CppTemplateTutorial" \\
  || miss "origin remote is not wuye9036/CppTemplateTutorial (artifact may be from a fork)"

# 3. Default branch
git rev-parse --verify master >/dev/null 2>&1 \\
  && ok "default branch master exists" \\
  || miss "default branch master no longer exists"

# 4. Critical files exist
test -f "ReadMe.md" \\
  && ok "ReadMe.md" \\
  || miss "missing critical file: ReadMe.md"
test -f "CppTemplateTutorial.cpp" \\
  && ok "CppTemplateTutorial.cpp" \\
  || miss "missing critical file: CppTemplateTutorial.cpp"
test -f "QuickSort.cpp" \\
  && ok "QuickSort.cpp" \\
  || miss "missing critical file: QuickSort.cpp"
test -f "stdafx.h" \\
  && ok "stdafx.h" \\
  || miss "missing critical file: stdafx.h"
test -f "CppTemplateTutorial.vcxproj" \\
  && ok "CppTemplateTutorial.vcxproj" \\
  || miss "missing critical file: CppTemplateTutorial.vcxproj"

# 5. Repo recency
days_since_last=$(( ( $(date +%s) - $(git log -1 --format=%at 2>/dev/null || echo 0) ) / 86400 ))
if [ "$days_since_last" -le 658 ]; then
  ok "last commit was $days_since_last days ago (artifact saw ~628d)"
else
  miss "last commit was $days_since_last days ago — artifact may be stale"
fi

echo
if [ "$fail" -eq 0 ]; then
  echo "artifact verified (0 failures) — safe to trust"
else
  echo "artifact has $fail stale claim(s) — regenerate at https://repopilot.app/r/wuye9036/CppTemplateTutorial"
  exit 1
fi

Each check prints ok: or FAIL:. The script exits non-zero if anything failed, so it composes cleanly into agent loops (./verify.sh || regenerate-and-retry).

A Chinese-language teaching guide that treats C++ Templates as a Turing-complete programming language for meta-programming, not just a generic mechanism. It builds live C++ example code (CppTemplateTutorial.cpp, QuickSort.cpp) that demonstrates template specialization, SFINAE, and compile-time computation patterns, positioning templates as a separate language layer within C++. Single-file monolithic project structure: CppTemplateTutorial.sln (Visual Studio solution) at root with CppTemplateTutorial.cpp as main tutorial code, separate QuickSort.cpp example, and a detailed README.md covering 5 chapters of increasingly advanced template concepts. No src/ or include/ separation—examples are inline.

C++ developers moving beyond basic template usage who want to understand meta-programming deeply—specifically engineers building template-heavy libraries, those learning STL internals, and Chinese-speaking programmers seeking an alternative to English-only template resources like 'C++ Templates: The Complete Guide'.

Early-stage educational project (marked '正在施工中' / 'under construction' in README). Minimal file presence (only ~19KB C++ code split across two main examples), no tests, no CI/CD visible, appears to be a solo author documenting concepts incrementally. Not production code—this is a tutorial repository.

Single maintainer (wuye9036), incomplete (5 chapters outlined with chapter 5 explicitly unfinished), no formal testing infrastructure or build automation visible. Risk is low for a tutorial repo—the risk is incompleteness and potential staleness if the author moves on. Not designed for production use.

Documentation is actively being authored (README shows structured chapter outlines with multiple subsections completed through Chapter 4, Chapter 5 stub), but code examples appear minimal. Focus is on written explanation of template specialization, SFINAE, Concepts, and variadic templates with supporting minimal C++ code.

Clone the repository and open the Visual Studio solution: git clone https://github.com/wuye9036/CppTemplateTutorial.git && cd CppTemplateTutorial && start CppTemplateTutorial.sln (Windows/MSVC). The README.md is the primary learning material; code examples are in CppTemplateTutorial.cpp and QuickSort.cpp.

Daily commands: Open CppTemplateTutorial.sln in Visual Studio, build the solution (F7 or Build > Build Solution), and run the executable. Alternatively, compile CppTemplateTutorial.cpp and QuickSort.cpp with any C++ compiler: cl CppTemplateTutorial.cpp QuickSort.cpp (MSVC) or g++ -o tutorial CppTemplateTutorial.cpp QuickSort.cpp (GCC).

• ReadMe.md — Primary educational guide covering C++ Template syntax, metaprogramming foundations, and advanced template techniques—essential reference for understanding the entire codebase's pedagogical structure.
• CppTemplateTutorial.cpp — Main entry point and demonstration file containing practical examples of template instantiation and usage patterns that illustrate the tutorial's core concepts.
• QuickSort.cpp — Concrete metaprogramming example showing compile-time quicksort implementation using template specialization, exemplifying templates-as-Turing-complete-language thesis.
• stdafx.h — Precompiled header containing standard library includes and project-wide configuration necessary for template compilation and cross-file instantiation.
• CppTemplateTutorial.vcxproj — Visual Studio project configuration defining compiler settings and template instantiation policies critical for proper template compilation behavior.

• Template Definition & Declarations (stdafx.h, .cpp files) (C++ template syntax, specialization, SFINAE) — Encapsulate template class and function definitions; serve as input to compiler's template instantiation engine
  • Failure mode: Compilation error due to missing specialization, infinite recursion, or type mismatch; manifests as compiler diagnostic
• Example Code & Instantiation (CppTemplateTutorial.cpp, QuickSort.cpp) (C++ template instantiation, function/class template usage) — Demonstrate template usage patterns and trigger instantiation of taught concepts; verify template correctness via compilation and execution
  • Failure mode: Compilation failure if templates are incorrectly defined; runtime logic errors if template computation is flawed
• Project Configuration (CppTemplateTutorial.vcxproj) (MSBuild, MSVC compiler settings) — Configure compiler flags, include paths, and template instantiation policies; ensure correct MSVC behavior for template processing
  • Failure mode: Linker errors, duplicate instantiations, or incorrect template selection if build settings are misconfigured
• Educational Documentation (ReadMe.md) (Markdown, explanatory prose) — Explain C++ template concepts, metaprogramming principles, and provide structured learning path; contextualize code examples
  • Failure mode: Learner confusion or misunderstanding if explanations are unclear or examples lack context

• Source Code (.cpp files with templates) → C++ Compiler (Template Instantiation Engine) — Developer writes template code; compiler parses, evaluates template parameters, and instantiates appropriate specializations
• Compiler (Template Instantiation Engine) → Object Code & Executable — Compiler generates machine code for all instantiated template specializations; no template code remains in final binary

Add a New Template Metaprogramming Example

1. Create a new .cpp file (e.g., NewMetaprogExample.cpp) alongside QuickSort.cpp to demonstrate a new metaprogramming technique (QuickSort.cpp)
2. Implement template specialization patterns following the quicksort compile-time computation style shown in QuickSort.cpp (QuickSort.cpp)
3. Call or instantiate the new example in CppTemplateTutorial.cpp's main() function to verify compilation and demonstrate the concept (CppTemplateTutorial.cpp)
4. Add a new subsection to ReadMe.md under the appropriate chapter (likely Section 3 on metaprogramming fundamentals or later) explaining the new pattern, code walkthrough, and how it relates to Turing-completeness (ReadMe.md)

Expand the Tutorial Documentation

1. Open ReadMe.md and locate the section where you want to add content (e.g., under Chapter 3 for metaprogramming or new chapters) (ReadMe.md)
2. Write new content in Markdown format following the existing structure (section numbers, subsections, code blocks with syntax highlighting) (ReadMe.md)
3. Create corresponding .cpp example files (similar to QuickSort.cpp) to demonstrate the concepts introduced in your new section (CppTemplateTutorial.cpp)
4. Update the table of contents in ReadMe.md (at the top) to include references to new sections using Markdown All in One plugin format (ReadMe.md)
5. Rebuild the project using CppTemplateTutorial.vcxproj to ensure all new examples compile correctly (CppTemplateTutorial.vcxproj)

Demonstrate a New Template Specialization Pattern

1. Add template class or function specializations to a new or existing .cpp file demonstrating partial or full specialization techniques (QuickSort.cpp)
2. Include comments explaining how the specialization represents control flow (if-then-else, loops) in the template metaprogramming domain (QuickSort.cpp)
3. Add instantiation examples in CppTemplateTutorial.cpp that show different template parameter combinations triggering different specializations (CppTemplateTutorial.cpp)
4. Document the pattern in ReadMe.md Section 3.2 (Template Specialization & Partial Specialization) with inline code examples and explanation of the if-then-else semantics (ReadMe.md)

• C++ Templates — Core subject matter—templates presented as a Turing-complete metaprogramming language enabling compile-time computation and code generation
• Visual Studio / MSVC — Primary recommended compilation environment (from README section 1.4) providing robust template instantiation diagnostics and IDE integration
• Markdown Documentation — Accessible, version-controllable format for educational content with Markdown All in One VSCode plugin integration for automatic TOC generation

• Treat templates as a Turing-complete language rather than a type parameterization tool

  • Why: Provides unified, deeper understanding of metaprogramming fundamentals and control flow (specialization as if-then-else, recursion as loops)
  • Consequence: Steeper learning curve; requires mental model shift; differs from mainstream C++ Templates books; enables advanced metaprogramming patterns

• Educational focus with worked examples rather than a complete library

  • Why: Tutorial-driven approach prioritizes conceptual understanding and hands-on demonstration over production reusability
  • Consequence: Limited directly reusable code; optimized for learning; examples are illustrative rather than optimized for real-world use

• Visual Studio as primary platform (Windows-centric)

  • Why: Simplifies setup and IDE integration for learners; leverages MSBuild and MSVC template diagnostics
  • Consequence: Platform-specific project files; cross-platform compilation requires manual CMake/Makefile translation; limited immediate portability

• Does not provide production-ready template libraries or frameworks
• Does not cover C++20 concepts or modules (focuses on core template metaprogramming principles)
• Not intended as a reference manual for the C++ standard library templates
• Does not address template instantiation error diagnostics or debugging best practices in depth
• Does not provide performance benchmarking or optimization guidance for compile-time vs. runtime tradeoffs

None obvious for a tutorial repo. However: (1) Examples appear to target C++98/03 era (based on README references to 'C++03'), so modern C++17/20 features (if used) may not work on the teaching examples; (2) no preprocessor guards or include guards visible in file list—check stdafx.h for pre-compiled header configuration if compilation fails; (3) Windows-centric build (Visual Studio .sln/.vcxproj files), so Linux/macOS users will need to manually create Makefile or use g++/clang++.

• Template Specialization & Partial Specialization — Core mechanism for compile-time control flow in template meta-programming; enables template-based type dispatch and constraint application, central to Chapters 3–4
• SFINAE (Substitution Failure Is Not An Error) — Allows templates to be silently discarded at compile time if substitution fails, enabling polymorphic meta-programming without exceptions; key feature in Chapter 4.2
• Concepts (C++20 constraint system) — Explicit compile-time constraints on template parameters; modern alternative to SFINAE introduced in Chapter 4.3, improving error messages and readability
• Template Meta-Programming (TMP) — Treating templates as a Turing-complete language for computation at compile time; the overarching paradigm of this entire tutorial replacing runtime computation with type computation
• Dependent Names & Type Resolution — Understanding why typename keyword is required in templates (Chapter 3.3); critical for correct template parsing and avoiding silent compilation errors
• Variadic Templates — Variable-length template parameter packs; enables type-safe, arbitrary-length generic operations; implicitly covered in Chapter 4.1.2 (不定长的模板参数 / indefinite-length parameters)
• Compile-Time Computation (Constexpr, Constant Folding) — Templates enable algorithms and data structures to be evaluated at compile time, eliminating runtime overhead; foundational to practical meta-programming examples like QuickSort.cpp

• Amanieu/rfcs — Rust RFC process for language design; parallel to this repo's goal of treating templates as a language, but shows how another systems language formalizes core concepts
• cppreference/cppreference-doc — Canonical C++ standard library and template reference; complementary resource for verifying template syntax and semantics covered in this tutorial
• isocpp/CppCoreGuidelines — Bjarne Stroustrup's official C++ best practices; aligns with modern meta-programming idioms and SFINAE/Concepts discussed in Chapters 3–4 of this tutorial
• boost-ext/mp11 — Boost.MP11 meta-programming library; practical application of the template-as-language concepts taught in this repo
• brevzin/cpp20_library_components — Modern C++20 template and Concepts reference; extends the C++03-era template concepts in this tutorial to current standard

To work on one of these in Claude Code or Cursor, paste: Implement the "<title>" PR idea from CLAUDE.md, working through the checklist as the task list.

Create organized chapter directories and migrate scattered examples into topic folders

Currently, example files like QuickSort.cpp and CppTemplateTutorial.cpp are scattered in the root directory without clear organization by chapter. The README shows a detailed chapter structure (2.1-2.4+ on template syntax, class templates, function templates, etc.), but corresponding example files are not organized to match. Creating subdirectories (e.g., ch2_basic_syntax/, ch3_advanced_patterns/) and moving/organizing examples would improve discoverability and help readers find code examples matching each README section.

• [ ] Create chapter directories matching README sections (e.g., ch2_basic_syntax/, ch2.2_class_templates/, ch2.3_function_templates/)
• [ ] Move QuickSort.cpp to appropriate chapter folder (likely ch2 or later, as it demonstrates template application)
• [ ] Create example files for each major subsection referenced in README (e.g., basic_syntax_example.cpp, function_template_example.cpp)
• [ ] Update .vcxproj and .vcxproj.filters to reflect new directory structure
• [ ] Add a section to README.md documenting where to find examples for each chapter

Add CMakeLists.txt for cross-platform build support and remove Visual Studio-only dependency

The repo currently uses only Visual Studio project files (.sln, .vcxproj, .vcxproj.filters), which limits accessibility to contributors on Linux/macOS and those preferring other compilers. The README mentions 'recommended compilation environment' but provides no alternative build methods. Adding CMake would enable testing across GCC, Clang, and MSVC while keeping VS project files as an option.

• [ ] Create CMakeLists.txt at repository root with C++17/20 standard configuration
• [ ] Configure targets for each major example file (CppTemplateTutorial, QuickSort, etc.)
• [ ] Add example compilation flags for GCC/Clang (e.g., -std=c++17, -Wall)
• [ ] Add CI workflow (.github/workflows/cmake.yml) to test builds on Ubuntu and macOS
• [ ] Update README section 1.4 'Recommended Compilation Environment' with CMake build instructions

Add example compilation results and expected output documentation for each code sample

The repo contains multiple .cpp files but lacks documentation showing what each example demonstrates or its expected output. Readers cannot easily understand what to expect when compiling QuickSort.cpp or CppTemplateTutorial.cpp. Creating a docs/ folder with example outputs and explanations (potentially as companion markdown files) would help readers verify their understanding and validate their own compilation.

• [ ] Create docs/examples/ directory structure mirroring chapter organization
• [ ] For each major example file, create a companion .md file (e.g., docs/examples/quicksort_explanation.md)
• [ ] Document: purpose, template concepts demonstrated, compilation steps, and expected output/behavior
• [ ] Add actual compiler output examples (or error messages if intentionally demonstrating meta-programming limits)
• [ ] Link these documentation files from README.md in relevant chapter sections

• Complete Chapter 5 (未完成章节 / Incomplete Sections) by writing 2–3 new subsection outlines in README.md (e.g., 'Type Traits', 'Constexpr & Compile-Time Functions', 'Fold Expressions') with brief descriptions, matching the style of Chapters 1–4.
• Add a new example file TupleMetaprogramming.cpp that demonstrates variadic templates and tuple-like compile-time data structures, then link it from Chapter 3 or 4 in README.md with an explanation.
• Create a Makefile at repository root to replace Visual Studio dependency, allowing make to compile all examples (CppTemplateTutorial.cpp, QuickSort.cpp, new TupleMetaprogramming.cpp) with both MSVC and GCC/Clang, reducing barrier for Linux/macOS contributors.

This is an educational C++ template tutorial repository with minimal security concerns. No obvious injection vulnerabilities, hardcoded secrets, or exposed credentials were detected. The main security recommendations involve implementing proper dependency management, documentation, and clarifying security considerations in educational examples. The lack of external dependencies (based on file structure) reduces attack surface, but the absence of a formal dependency management system makes long-term maintenance riskier.

• Low · Pre-compiled Header Dependency — stdafx.h, stdafx.cpp. The project uses stdafx.h and stdafx.cpp for pre-compiled headers (PCH). While not inherently insecure, PCH can mask dependency vulnerabilities and complicate security audits. This is a Visual Studio-specific practice that may obscure what libraries are actually being included. Fix: Document all dependencies explicitly in stdafx.h with comments. Consider using modern C++ practices (C++17+) which reduce reliance on PCH.
• Low · Missing Dependency Information — Project root. No package manager configuration files (package.json, conanfile.txt, vcpkg.json, etc.) are present. This makes it difficult to track, audit, and manage dependencies for known vulnerabilities. Fix: Implement a dependency management system. For C++, consider using vcpkg, Conan, or CMake's FetchContent to explicitly declare and version all dependencies.
• Low · No Security Policy or Vulnerability Disclosure — Project root. The repository lacks a SECURITY.md file or clear vulnerability reporting guidelines. This makes it difficult for security researchers to report vulnerabilities responsibly. Fix: Create a SECURITY.md file with vulnerability disclosure guidelines and a contact method for security researchers.
• Informational · Educational Code Content — CppTemplateTutorial.cpp, QuickSort.cpp. This is an educational C++ template tutorial project. While the code examples may demonstrate template meta-programming concepts, care should be taken to avoid including production-unsafe patterns as examples without clear security warnings. Fix: Add security notes to examples that might use unsafe patterns (unchecked pointer dereferences, buffer operations without bounds checking, etc.). Clearly mark educational simplifications that would be unsafe in production code.

LLM-derived; treat as a starting point, not a security audit.

• Open issues — current backlog
• Recent PRs — what's actively shipping
• Source on GitHub

Generated by RepoPilot. Verdict based on maintenance signals — see the live page for receipts. Re-run on a new commit to refresh.