javascript: convert two dimensional array to array of objects using the first ‘row’ to define properties

by 
var array = [  
    ['country', 'population'],
    ['someplace', 100],
    ['otherplace', 200]
];

var keys = array.shift();
var objects = array.map(function(values) {
    return keys.reduce(function(o, k, i) {
        o[k] = values[i];
        return o;
    }, {});
});

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