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powersOfTwo(0) // [1] powersOfTwo(1) //[1, 2] powersOfTwo(4) // [1, 2, 4, 8, 16] function powersOfTwo(n) { return Array.from({length: n + 1}, (v, k) => 2 ** k); }
这里的2**k是怎么理解?
闭关修行中......
es7 特性
Exponentiation
表示2的k次方
es7 特性
Exponentiation
表示2的k次方