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Deven
11 lines
212 B
JavaScript
11 lines
212 B
JavaScript
/**
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* @return {null|boolean|number|string|Array|Object}
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*/
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Array.prototype.last = function() {
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return this.length === 0 ? -1 : this[this.length - 1]
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};
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/**
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* const arr = [1, 2, 3];
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* arr.last(); // 3
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*/ |