codex-lv3-may-2025

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Level 44 (Challenge): Choose Your Own Function Cluster

Now it’s your turn! Choose one of the function clusters from function-ideas.md and build them out.

Available clusters:

• 🍳 Recipe & Measurement Functions - convertToCups, calculateTip, applyDiscount
• 🧮 Math & Geometry - double, addTax, distance
• 🎨 Color Utilities - mixColors, lighten, convertArrayToRGB
• 🧠 Word & String Utilities - toSnakeCase, toKebabCase, toCamelCase
• 🐉 API / Data Simplifiers - simplifyPokemonObject, tempToday, conditionsToday

Your task:

1. Choose a cluster that interests you
2. Build each function in the cluster:
   • Write tests first (red)
   • Implement the function (green)
   • Test edge cases
3. Compose them into at least one larger function that uses multiple functions from your cluster
4. Document your functions with clear input/output examples

Example workflow:

// Step 1: Build individual functions
function calculateTip(total, percent) { /* ... */ }
function applyDiscount(price, discount) { /* ... */ }

// Step 2: Compose them
function calculateFinalPrice(price, discount, tipPercent) {
  const discounted = applyDiscount(price, discount);
  return calculateTip(discounted, tipPercent);
}

Try it: Pick a cluster and build it out! Write tests, implement functions, and compose them together.

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