Use Arrow Functions for Shorter Callbacks

Problem

Traditional function syntax in callbacks adds unnecessary verbosity.

Solution

Use arrow functions (=>) for concise callback syntax with implicit returns.

Benefit

Reduces callback code by 40% and automatically binds this context.

Code Example

// Traditional
numbers.map(function(n) {
    return n * 2;
});

// Arrow function
numbers.map(n => n * 2);