AI for Programming

Describe what a function should do and AI writes it.

// Prompt: "Write a function that takes an array of numbers
// and returns only even numbers sorted descending"

function getEvenDescending(numbers: number[]): number[] {
  return numbers
    .filter(n => n % 2 === 0)
    .sort((a, b) => b - a);
}

Paste an error message and code, AI finds the cause and suggests a fix.

// Prompt: "I have error: Cannot read property 'map' of undefined
// on line: users.map(u => u.name)"

// AI: Variable 'users' is undefined.
// Solution: add a default value
const names = (users ?? []).map(u => u.name);

AI writes unit tests for your function including edge cases.

// Prompt: "Write tests for getEvenDescending"

describe('getEvenDescending', () => {
  it('filters and sorts even numbers', () => {
    expect(getEvenDescending([3, 8, 1, 4, 6]))
      .toEqual([8, 6, 4]);
  });
  it('returns empty for no evens', () => {
    expect(getEvenDescending([1, 3, 5])).toEqual([]);
  });
  it('handles empty array', () => {
    expect(getEvenDescending([])).toEqual([]);
  });
});

Describe an app in natural language and AI builds the whole thing.

// Prompt in Lovable:
// "Create a task management web app
// with auth, categories, priorities
// and a dark theme."

// AI creates a complete React app
// with authentication, database, and UI