Explain code behavior in detail. Trigger with "explain this code", "what does this do?", "how does this work?", "what is this function for?", "explain the logic".
SkillScore100Maintained
Automatic
◆Coding pack
Last verified 8/16/2026
What it changes
Passed 22 of 22 test cases with the skill, and 21 of 22 without it.
Without skill95%
With skill100%
Checks it passed that the model alone missed
Identifies the pattern as Factory Method.
1 fixed21 passed either way0 still failing0 broke
Pass-rate lift
+5 pp
Tokens
+21%
Agent turns
0%
Response time
+4%
Model gemini-3.6-flashMeasured 8/16/2026v122 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
Identify the design pattern used in this code: `class NotificationFactory { static createNotification(type) { if (type === 'email') return new EmailNotification(); if (type === 'sms') return new SMSNotification(); } }`. Explain why this pattern is used instead of direct instantiation in client code.
What was checked, without and with the skill
Checked
Without skill
With skill
Identifies the pattern as Factory Method.
Missed
Passed
Explains that decoupling client code from concrete implementation classes allows adding new notification types without modifying callers.
Passed
Passed
case-03 · gemini-3.6-flash · 8/16/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md79 linessingle file
Explain code behavior in detail
Explains how code works in detail.
Usage
# Show a file and ask for explanation
cat <file>
"Explain how this code works"
Basic Examples
# Understand Rust ownership
cat main.rs
"Explain the ownership and lifetimes in this Rust code"
# Explain an algorithm
grep -A 50 "quicksort" sort.rs
"How does this sorting work? What's its time complexity?"
# Explain design patterns
cat factory.rs
"What design pattern is this? What are the benefits?"
Collaboration with Claude
# Beginner-friendly explanation
cat complex_function.py
"Explain this code line by line for someone new to programming"
# Performance check
cat algorithm.rs
"Find performance problems and how to fix them"
# Visual explanation