I have a helper function I wrote, but it feels like something _.lodash already does or could do if I knew the library better.function changed(before:any[], after:any[]):boolean[]{    if (before.length !== after.length)    {        throw new Error(`Length of arrays are not equivalent: ${before.length}, ${after.length}`);    }    else    {        let changed:boolean[] = [];        for(let i = 0; i < before.length; i++)        {            changed[i] = (after[i] !== before[i]);        }        return changed;    }}An example of how this might be used and what would return:console.log(changed([0,1,0,1], [0,1,1,0]))// => [false, false, true, true]Does anyone know if this can be elegantly achieved with lodash?
Comparing corresponding elements of two equal-length arrays
functional programming;typescript;lodash.js
I don't know TypeScript or lodash, but I hope the following code is at least almost correct. You should be able to use zip and map to solve the problem in a functional manner.function changed(a, b) {    return _.zip(a, b).map(x => { return x[0] !== x[1] });}Basically, the problem of what has changed can be rephrased as which elements are equal.