Two Array > Zip > Key, Value Mapping

Jonathan_Hutchinson

I'm trying to carefully approach this one as I don't see an elegant way through at first glance. Given two arrays a and b, sized n, how could you create from them a map like so:

{ a[0]: b[0], a[1]: b[1] }

EvanReese

Is your goal to create the map from the arrays or make the arrays from a map or what? Does this do anything you're after?

        const a = [12,15,2,5];
        const b = [3,5,7,9];
        const count = size(a);
        var theMap = {};
        
        for (var i = 0; i < count; i += 1)
        {
            theMap[a[i]] = b[i];
        }

Jonathan_Hutchinson

Yeah that does the job very nicely! I wasn't sure if I was misreading the API for a shorthand of it in method overloads. But this is short enough!

EvanReese

Cool! good opportunity to write a function if this is something you need to do often.