Unflatten Arrays into groups of fours

arrays, javascript, underscore.js

Solution

Underscore, since you asked: (Example)

var i = 4, list = _.groupBy(someArray, function(a, b){
    return Math.floor(b/i);
});
newArray = _.toArray(list);

Vanilla JS: (Example)

var newArray = [], size = 4;
while (someArray.length > 0) newArray.push(someArray.splice(0, size));

Problem

I have an array that is as follows: ``` var someArray = ['val1','val2','val3','val4','val5','val6','val7','val8','val9','val10','val11','val12']; ``` I'm trying to figure out some elegant way, using `underscore`, of simply converting it to an array of arrays like so... ``` [['val1','val2','val3','val4'], ['val5','val6','val7','val8'], ['val9','val10','val11','val12']] ``` Where each index of the new array is groups of four elements from the first array. Is there an easy elegant way of doing this with `underscore.js`.

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