Legend quest · reward 50 XP

|x| x+1 is a closure.

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Egg hatching · 0%

Finish every step to hatch your monster!

Step 1 / 6

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Closure

|x| x+1 is a closure. 🔍 Why it matters: Games use this to remember your score, your lives and your level.

let inc = |x| x + 1;