JS Practice — Built-in Objects

Generics — reduce<T, U>

📖 Usage Example

reduce([1, 2, 3, 4], (acc, x) => acc + x, 0)   // → 10

reduce<T, U> folds an array into a single value using an accumulator function.

Generics: reduce<T, U>

Challenge: Implement reduce<T, U>(arr: T[], fn: (acc: U, x: T) => U, init: U): U.

reduce([1,2,3,4], (acc, x) => acc + x, 0)  // → 10

💡 Hints (1)