The map function in underscore.js, if called with a javascript object, returns an array of values mapped from the object's values. _.map({one: 1, two: 2, three: 3}, function(num, key){ return num * 3; }); => [3, 6, 9] is there a way to make it preserve the keys? ie, I want a function that returns {one: 3, two: 6, three: 9}
![Map over object preserving keys](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)