How to Achieve Python's `zip` Functionality in Javascript?-Python Tutorial-php.cn

How to Achieve Python's `zip` Functionality in Javascript?

Barbara Streisand

Release： 2024-12-21 20:57:32

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How to Achieve Python's `zip` Functionality in Javascript?

Javascript Equivalent of Python's zip Function

The zip function in Python is utilized to merge multiple arrays of identical lengths into a single array of pairs. In Javascript, a similar functionality can be achieved using the following methods:

One-liner solution:

function zip(arrays) {
    return arrays[0].map(function(_, i) {
        return arrays.map(function(array) {
            return array[i];
        });
    });
}

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Array.map method:

var zip = (...arrays) => arrays[0].map((_, i) => arrays.map(array => array[i]));

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Handling arrays of unequal length:

function zip() {
    var args = [].slice.call(arguments);
    var shortest = args.length === 0 ? [] : args.reduce(function(a, b) {
        return a.length < b.length ? a : b;
    });

    return shortest.map(function(_, i) {
        return args.map(function(array) {
            return array[i];
        });
    });
}

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Handling arrays of any iterable:

function iterView(iterable) {}

function zip(arrays) {
    return Array.apply(null, Array(arrays[0].length)).map(function(_, i) {
        return arrays.map(function(array) {
            return array[i];
        });
    });
}

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