m12-lifecycle
Skill14 starsChanged 9 months agoMITView on GitHub
Mastering C++ Lifecycle: RAII, Destructors, Static Initialization, Rule of 5.
7 other projects use a version of this.
Adopted by
Most recently taken up by
- TeddyAlbina/skillstheir own version, first seen Nov 1, 2026
- moeru-ai/auvtheir own version, first seen Oct 10, 2026
- fjrevoredo/mini-diariumtheir own version, first seen Oct 8, 2026
- ZhangHanDong/rust-skillstheir own version, first seen Oct 8, 2026
- MovGP0/Skillstheir own version, first seen Jun 30, 2026
- pocket-veto/pocket-vetotheir own version, first seen Jun 27, 2026
Other versions7 projects use a version of this.
Word for word · 0
None found.
Edited · 0
None found.
Wrote their own version · 7
- ZhangHanDong/rust-skills★ 1.5ksame name
- actionbook/rust-skills★ 1.5ksame name
- fjrevoredo/mini-diarium★ 318same name
- moeru-ai/auv★ 207same name
- TeddyAlbina/skills★ 2same name
- MovGP0/Skills★ 1same name
- pocket-veto/pocket-veto★ 1same name
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
In this repository14 other files it gives its agents.
- cpp20-skill-creatorSkill
- m01-ownershipSkill
- m02-resourceSkill
- m03-mutabilitySkill
- m04-zero-costSkill
- m05-type-drivenSkill
- m06-error-handlingSkill
- m07-concurrencySkill
- m09-domainSkill
- m10-performanceSkill
- m11-ecosystemSkill
- m13-domain-errorSkill
- m14-mental-modelSkill
- m15-anti-patternSkill
The file
We split this skill into the rules it gives an agent
1 rule. About 0 are common, 0 are distinctive, and 1 is very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈0
Distinctive · estimate
This author's own choices. Worth a look.
1
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Very specific: line 13
Heap: When delete (or smart pointer drop) occurs.
≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
C++ Resource Lifecycle
Core Question
When does this die?
- Stack: End of scope
}. - Heap: When
delete(or smart pointer drop) occurs. - Static: At program exit (reverse init order).
Error → Design Question
| Issue | Design Question |
| Resource Leak | Did you manually open() without a wrapper class? |
| Use After Free | Did you capture a reference to a local variable in a lambda/thread? |
| Static Fiasco | Do statics depend on each other? (Use Meyers Singleton). |
Thinking Prompt
- Does it have a destructor?
- Yes → RAII. Good.
- No → Wrap it.
- Does it copy?
FILE*cannot copy. Delete copy constructor.
Quick Reference
| Pattern | Use Case |
| RAII Wrapper | FileHandle, LockGuard. |
| Scope Guard | std::scope_exit (Cleanup callback). |
| Rule of 5 | Copy/Move/Destructor implementation logic. |
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