Combine Arrays with Spread

Data Structures, Operators & Stringseasy

Course · Section 9: Data Structures, Modern Operators and Strings · Lecture 111: The Spread Operator (...)

Implement `combine(a, b)` returning a new array with all of `a` then all of `b`, using spread.

Input: combine([1], [2,3])

Output: [1,2,3]

Input: combine([], [1])

Output: [1]

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Common pitfalls

Approach & explanation (try first)

Spreading both arrays builds a new combined array without mutation.

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