cpp-advanced-templates

A set of rules for advanced C++ templates and work done during compilation. It covers template metaprogramming, compile-time constants, type checks, and optional SIMD code for parallel calculations.

In plain words
What is it for?
Use it when writing C++ templates, constexpr functions, type traits, compile-time validation, or AVX2-based vector operations.
Why use it?
It provides examples and patterns for moving calculations and checks to compile time, while supporting faster alternatives on compatible processors.

Cursor rule for Cursor

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/wangqiqi/cursor-ai-rules/cpp-advanced-templates
Clone the repo
git clone --depth 1 https://github.com/wangqiqi/cursor-ai-rules

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 472 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00472
Opus 5 $0.00000 $0.00236
Sonnet 5 $0.00000 $0.00094
Haiku 4.5 $0.00000 $0.00047

Measured 2d ago against content hash 1eb593a44e06, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cpp-advanced-templates scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/rules/tech/cpp-advanced-templates.mdc · 73 lines

What it actually says

C++ 模板与编译时优化 (Templates)

本规则由 @cpp-advanced 引用

模板元编程

template<size_t N>
struct Factorial {
    static constexpr size_t value = N * Factorial<N - 1>::value;
};
template<> struct Factorial<0> { static constexpr size_t value = 1; };

constexpr size_t factorial_10 = Factorial<10>::value;

类型特征

template<typename T>
struct is_pointer : std::false_type {};
template<typename T>
struct is_pointer<T*> : std::true_type {};

template<typename T>
void processData(T value) {
    static_assert(!is_pointer<T>::value, "Pointers not allowed");
}

constexpr 函数

constexpr int fibonacci(int n) {
    return (n <= 1) ? n : fibonacci(n - 1) + fibonacci(n - 2);
}

条件编译 (SIMD)

#ifdef __AVX2__
#include <immintrin.h>
void vectorizedAdd(float* a, float* b, float* result, size_t size) {
    for (size_t i = 0; i < size; i += 8) {
        __m256 va = _mm256_load_ps(&a[i]);
        __m256 vb = _mm256_load_ps(&b[i]);
        _mm256_store_ps(&result[i], _mm256_add_ps(va, vb));
    }
}
#else
void vectorizedAdd(float* a, float* b, float* result, size_t size) {
    for (size_t i = 0; i < size; ++i) result[i] = a[i] + b[i];
}
#endif

原则

  • MUST 使用 constexpr 进行编译时计算
  • MUST 用 static_assert 约束模板参数

引用: @cpp-advanced

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 73 lines · 0 tokens per session scan A 1eb593a44e06

Subscribe to this mod's changes

cpp-advanced-templates is a cursor rule published in the GitHub repository wangqiqi/cursor-ai-rules (15 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 472 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.