Debugging Instruments
You'll reach for this when your iOS app is crashing, leaking memory, or freezing the UI and you need to figure out why. It covers the practical LLDB commands for debugging, walks through finding retain cycles with the Memory Graph Debugger, and shows how to use Instruments to profile CPU and memory. The retention cycle examples are particularly helpful, covering the classic mistakes like closures capturing self strongly and Timer targets. It also includes hang diagnostics with Time Profiler and covers build failure triage. Good for intermediate developers who know the tools exist but want efficient workflows and common patterns to look for.
- skills.sh installs
- 4.3K
- GitHub stars
- 1.3K
- last updated
- Aug 21, 2026
Install
$ npx -y skills add dpearson2699/swift-ios-skills --skill debugging-instruments --agent claude-codeInstalls into .claude/skills of the current project.
Files
Debugging and Instruments
Keep interactive graph and Instruments triage here. Route detailed .memgraph
command-line ownership/growth analysis and ETTrace work to their focused skills.
Contents
- LLDB Debugging
- Memory Debugging
- Hang Diagnostics
- Build Failure Triage
- Instruments Overview
- Common Mistakes
- Review Checklist
- References
LLDB Debugging
Start with a small, repeatable workflow:
- Reproduce in a Debug build and stop at the narrowest useful breakpoint.
- Inspect locals without executing code, then capture the current stack.
- Move to the relevant frame or thread and verify the failing state.
- Add a condition or watchpoint only when the bad transition is still unclear.
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- Repository
- github.com/dpearson2699/swift-ios-skills
- Categories
- DevOps & CI/CD, Debugging, Rust, Mobile Development, CLI & Terminal
- First seen
- Apr 16, 2026
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