Ruby · question
Question 8 of 85
Explain the difference between Array#flatten and Array#compact.
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Re-explain
- flatten: Removes nested array structure, creating a single-level array
- compact: Removes nil values from array
[[1, 2], [3, [4]]].flatten # [1, 2, 3, 4]
[1, nil, 2, nil, 3].compact # [1, 2, 3]
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