9 lines
204 B
JavaScript
9 lines
204 B
JavaScript
class MyCoolArray extends Array {
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first() { return this[0] }
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last() { return this[this.length - 1] }
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}
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b = [1, 2, 3]
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a = new MyCoolArray(...b)
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console.log(a.first())
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console.log(a[2])
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console.log(b[-1]) |