Implement memory-safe programming with RAII, ownership, smart pointers, and resource management across Rust, C++, and C.
SkillScore95Maintained
Automatic
◆Coding pack
Last verified 8/29/2026
What it changes
Passed 21 of 22 test cases with the skill, and 20 of 22 without it.
Without skill91%
With skill95%
Checks it passed that the model alone missed
Recommends implementing the Drop trait in Rust to automatically close system descriptors when objects go out of scope.
1 fixed20 passed either way1 still failing0 broke
Pass-rate lift
+5 pp
Tokens
-14%
Agent turns
0%
Response time
-20%
Model gemini-3.6-flashMeasured 8/29/2026v121 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
A test case the skill fixed. Same model, same prompt, with and without the skill.
Prompt
Our team is designing a cross-platform systems component in C++ and Rust that handles file handles and network connections. We need a detailed design plan that explains how to encapsulate these native descriptors using deterministic destruction and ownership patterns. Please format your response as a comparison breakdown with actionable implementation steps and validation techniques.
What was checked, without and with the skill
Checked
Without skill
With skill
Recommends implementing the Drop trait in Rust to automatically close system descriptors when objects go out of scope.
Missed
Passed
case-02 · gemini-3.6-flash · 8/29/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md33 linessingle file
Memory Safety Patterns
Cross-language patterns for memory-safe programming including RAII, ownership, smart pointers, and resource management.
Use this skill when
Writing memory-safe systems code
Managing resources (files, sockets, memory)
Preventing use-after-free and leaks
Implementing RAII patterns
Choosing between languages for safety
Debugging memory issues
Do not use this skill when
The task is unrelated to memory safety patterns
You need a different domain or tool outside this scope
Instructions
Clarify goals, constraints, and required inputs.
Apply relevant best practices and validate outcomes.
Provide actionable steps and verification.
If detailed examples are required, open resources/implementation-playbook.md.
Resources
resources/implementation-playbook.md for detailed patterns and examples.