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Diego Carreira
Diego Carreira

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🤖 Should I Use AI for Code Reviews? 🤔

Hey! Let's cut to the chase - you're probably wondering if AI code review tools are worth your time. Let's look at real examples where they shine (and where they don't).

Where AI Actually Helps 👍

1. Catching Simple But Annoying Mistakes

// Your code
function getUserData(id) {
  const user = users.find(u => u.id === id);
  return user.data;  // Potential null reference
}

// AI suggestion: "Hey, you might want to add a null check here"
function getUserData(id) {
  const user = users.find(u => u.id === id);
  return user?.data ?? null;
}
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2. Style and Best Practices

// Your code
const processItems = (items) => {
  let result = [];
  for(let i = 0; i < items.length; i++) {
    result.push(items[i].value * 2);
  }
  return result;
}

// AI suggestion: "This could be simpler with map()"
const processItems = (items) => 
  items.map(item => item.value * 2);
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3. Performance Hints

// Your code
const searchUsers = users.filter(user => {
  return user.name.toLowerCase().includes(searchTerm.toLowerCase());
}).map(user => user.name);

// AI suggestion: "Moving toLowerCase() outside the loop"
const searchTermLower = searchTerm.toLowerCase();
const searchUsers = users
  .filter(user => user.name.toLowerCase().includes(searchTermLower))
  .map(user => user.name);
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Where AI Falls Short 👎

1. Business Logic

// AI won't understand your business rules
function calculateDiscount(user, cart) {
  // Complex business logic here
  if (user.tier === 'premium' && cart.total > 100) {
    return cart.total * 0.15;
  }
  // AI might suggest "simplifying" this,
  // but it doesn't know your business rules!
}
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2. Architecture Decisions

// AI won't help much with architectural choices
// It might even give bad advice!
import { useContext } from 'react';

// AI might not understand why you chose
// Context over Props or Redux
const UserProfile = () => {
  const user = useContext(UserContext);
  // ...
}
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The Bottom Line 🎯

✅ Use AI review tools for:

  • Catching typos and basic errors
  • Style consistency
  • Simple refactoring suggestions
  • Security basics

❌ Don't rely on AI for:

  • Business logic validation
  • Architecture decisions
  • Complex security reviews
  • Team-specific patterns

Quick Start (if you want to try)

# Most IDEs now have AI integration
# VSCode + GitHub Copilot example:
1. Install GitHub Copilot extension
2. Open a PR
3. Look for the AI suggestions in comments

# That's it! Start small and see if it helps
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Pro Tip 💡

Use AI reviews as a first pass before human review. It's like having a junior dev look at your code before your senior dev does - helpful, but not the final word.

Remember: AI is a tool, not a replacement for thinking! 🧠

Thanks for reading! Do you have any thoughts ? Leave questions or comments below.

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