uniqWith

2024年06月17日

柏拉文

越努力，越幸运

一、认识

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二、语法

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三、实现

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3.1 reduce

function uniqWith(array, comparator) {
    return array.reduce((prev, curr) => {
        return prev.concat(prev.some((item) => comparator(curr, item)) ? [] : curr);
    }, []);
}

function isObject(value) {
    return typeof value === "object" && value !== null;
}

function isEqual(value, other) {
    if (!isObject(value) || !isObject(other)) {
        return value === other;
    }
    const valueKeys = Object.keys(value);
    const otherKeys = Object.keys(other);
    if (valueKeys.length !== otherKeys.length) {
        return false;
    }
    for (let key in value) {
        if (!isEqual(value[key], other[key])) {
            return false;
        }
    }
    return true;
}

console.log(uniqWith([1, 2, { x: 1, y: 2 }, 1, 2, { y: 2, x: 1 }], isEqual));