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13 lines
236 B
JavaScript
13 lines
236 B
JavaScript
Array.prototype.last = function() {
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if (!this.length) {
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// empty array, ideally should throw an exception
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return -1;
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}
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return 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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*/
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