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1. A pretty awkward linked list A pretty awkward linked list

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   const Node = (function () {

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     const _value = new WeakMap();

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     function _Node(value) {

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       _value.set(this, value);

2. Fizzbuzz Without If JavaScript Fizzbuzz Without If JavaScript

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   function replacer(arr, num, replace) {

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   	for (let i = num - 1; i < arr.length; i += num) {

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   		arr[i] = replace;

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   	}

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   }

3. Implementation of Abstract Equality ... Implementation of Abstract Equality Comparison

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   function getMethod(value, property) {

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     if (typeof property === 'string' || typeof property === 'symbol') {

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       const func = value[property]

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       if (func === null || func === undefined) {

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         return undefined;