// Simple utility functions for demonstration
export function add(a, b) {
return a + b;
}
export function subtract(a, b) {
return a - b;
}
export function multiply(a, b) {
return a * b;
}
export function divide(a, b) {
if (b === 0) {
throw new Error('Division by zero');
}
return a / b;
}
export function isEven(num) {
return num % 2 === 0;
}
export function capitalize(str) {
if (!str) return '';
return str.charAt(0).toUpperCase() + str.slice(1).toLowerCase();
}