4 ms·

I‘m not good in JavaScript, but reading the code, I wonder if this implementation doesn’t have an issue with truthiness in the second array. For example if you

• universa1 4y ago
  That was my quick reaction as well... I think it would need something like the python example below, where you first check the lengths of the two arrays/lists, and then iterate over that, and not directly over the length of the first list. iter_limit = Math.min(ls1.length, ls2.length); for(let i = 0; i < iter_limit; i++)...
  • chrisco255 4y ago
    function zip(arr_a, arr_b) { const len = arr_a.length < arr_b.length ? arr_a.length : arr_b.length; return arr_a.slice(0, len).map((el, idx) => [el, arr_b[idx]]); }
• m-r-r 4y ago
  Yes, the JavaScript implementation doesn't works if the second array contains 'false', 'null', 'undefined', '0' or 'NaN'. Here is my implementation of the 'zip' function in modern JavaScript. It is similar to the Vlang version, but it is generic over the number of arrays : const zip = (...arrays) => { const length = Math.min(...arrays.map((array) => array.length)); return Array.from({ length }, (_, i) => arrays.map((array) => array[i])); };