Understanding code
does matter

JavaScript

function calculateStreak(activity) {

if (!activity.length) return 0;

return activity.reduce((streak, day) => {

const hasWorked = day.count > 0;

return hasWorked ? streak + 1 : 0;

}, 0);

}

Current streak

12 days

How snnipy works

A real code snippet is presented to you. Read carefully and understand the logic behind each line.

Describe in detail what the code does in your own words. The more precise you are, the better score you'll get.

snnipy evaluates your answer using AI, giving you a detailed score and feedback to level up.

Designed to create the habit of reading code every day.

Make code reading a habit and don't let your streak get lost.

Choose your favorite language and perfect your understanding line by line.

Read surprise snippets from your languages and improve your understanding.

JavaScript, Python, Rust, Go... Familiarize yourself with the syntax of the most powerful languages.