🧠

Claude Code

As an Aided Tool in Development

Bug Fixing Code Standards TDD Security

2h

Duration

4

Key Topics

Dev

Audience

SLIDE 02 / 23

📋 Overview

Session Objectives

By the end of this session, participants will:

🎯

Understand Value

Know where Claude adds value in development workflows

🛠️

Use Effectively

Apply Claude for bug fixing, code quality, TDD, and security

⚠️

Avoid Pitfalls

Recognize and avoid common AI misuse patterns

SLIDE 03 / 23

🔍 Definition

What Claude Code Is (and Is Not)

✓ Claude IS

A development assistant
A second pair of eyes
A fast reader of unfamiliar code

✗ Claude IS NOT

A replacement for developers
A guaranteed source of correct answers
A decision-maker

"Claude assists — developers decide."

SLIDE 04 / 23

📊 Analysis

Where Claude Helps Most

Impact Level by Area

High Impact

Debugging & root cause analysis
Refactoring & readability
Test case generation
Security pattern detection

Lower Impact

Architecture decisions
Business logic
Production trade-offs

SLIDE 05 / 23

⚙️ Setup

Demo Setup (Context)

📦

Codebase

Example project: Laravel / Vue / API

🔧

Tooling

Claude Code (IDE / CLI) + Existing tests

🎯

Goal

Fix a real bug & improve code quality safely

$ claude --project ./my-app

SLIDE 06 / 23

🐛 Bug Fixing

The Traditional Pain

Common debugging challenges developers face

Developer Time Spent on Debugging

😤 Hard-to-reproduce bugs

Inconsistent behavior across environments

🔍 Hidden edge cases

Unexpected input combinations

📚 Large codebases

Unfamiliar or legacy code

⏰ Time wasted

Guessing instead of knowing

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🐛 Bug Fixing

Bug Fixing with Claude Code

Claude can help:

Explain existing code behavior
List possible failure points
Suggest reproduction steps
Highlight missing checks

Example Prompts

"Explain what this function does"

"What edge cases could break this?"

"Where could this return null?"

SLIDE 08 / 23

🐛 Bug Fixing

Best Practices

✓ DO

Use Claude to generate hypotheses
Verify suggestions manually
Test assumptions thoroughly

✗ DON'T

Blindly copy-paste fixes
Skip understanding root cause

SLIDE 09 / 23

📐 Code Standards

Why They Matter

Poor Code Quality

Hard to read
Hard to test
Easy to break
Increased security risks

Good Code Quality

Readable
Predictable
Testable
Maintainable

Code Quality Impact

SLIDE 10 / 23

📐 Code Standards

Refactoring with Claude Code

Claude can assist with:

Improving naming conventions
Reducing method length
Applying SOLID principles
Separating responsibilities

Example Prompts

"Refactor this for readability"

"Make this code more testable"

"Explain why this refactor is better"

SLIDE 11 / 23

📐 Code Standards

Code Review Mindset

Treat Claude output like a junior developer's PR

🔄

Behavior Check

Does behavior stay the same?

🔀

Edge Cases

Are edge cases handled?

📉

Complexity

Is complexity reduced?

SLIDE 12 / 23

🧪 TDD

Why Teams Struggle with TDD

Common TDD Issues

❓ Unclear test cases

Not knowing what to test

🕳️ Missing edge cases

Incomplete coverage

⏰ Tests added late

Retrofitting tests after code

📝 Poor test intent

Tests that don't reflect purpose

SLIDE 13 / 23

🧪 TDD

TDD with Claude Code

Claude excels at:

Suggesting test cases
Identifying edge conditions
Writing initial failing tests

Example Prompts

"Write tests first for this requirement"

"What edge cases should be tested?"

"Which test should fail first?"

SLIDE 14 / 23

🧪 TDD

Developer Responsibility

🤖 Claude Can

Suggest tests
Generate test templates
Identify scenarios

👤 Developers Must

Decide what matters
Validate test correctness
Avoid meaningless tests

"Tests are documentation, not just coverage."

SLIDE 15 / 23

🔒 Security

Why Security Is Often Missed

Security Oversight Reasons

🎯 Focus on functionality

Ship features first mentality

🤔 Security assumptions

Assuming it's secure enough

📚 Lack of expertise

Security knowledge gaps

⏰ No review time

No dedicated security review

SLIDE 16 / 23

🔒 Security

Security Review with Claude Code

Claude can identify:

Input validation issues
Injection risks (SQL, XSS)
Auth/authorization mistakes
Common OWASP patterns

Example Prompt

"Review this code for security vulnerabilities"

SLIDE 17 / 23

🔒 Security

Important Warning

✓ Claude CAN

Detect common patterns
Know common risks
Flag potential issues

✗ Claude IS NOT

A security auditor
A compliance checker
A penetration tester

"Use Claude as an early warning system, not final approval."

SLIDE 18 / 23

💡 Best Practices

Prompting Best Practices

❌ Bad Prompt

"Fix this code"

Vague, no context, no expectation

✓ Good Prompts

"Fix this bug and explain why it happens"

"Refactor without changing behavior"

"List assumptions and risks"

SLIDE 19 / 23

⭐ Guidelines

Golden Rules When Using Claude

📝

Give Context

Always provide relevant background

❓

Ask for Explanations

Understand the reasoning

🔍

Challenge Output

Question and verify suggestions

🚫

Never Trust Blindly

Always validate before using

Own the final decision

SLIDE 20 / 23

⚠️ Caution

When NOT to Use Claude

🏗️

Architecture Decisions

System design requires deep business understanding

🔐

Sensitive Secrets

Never share credentials or keys

💼

Business Trade-offs

Strategic decisions need human judgment

🤷

Unclear Output

Don't use what you don't understand

SLIDE 21 / 23

🎯 Summary

Key Takeaways

Claude improves speed, not judgment

Best Use Cases

Developer accountability remains critical

SLIDE 22 / 23

🔮 Preview

Week 3 Preview

Coming Next

🤖

Understanding Agents

Goal-oriented AI workers

⚡

Skills & Standards

Reusable instruction sets

📊

Measuring Real Impact

Quality, speed, and risk

SLIDE 23 / 23

💬

Questions & Discussion

Let's explore real-world scenarios together

Questions Discussion Real-world Scenarios