gistfile1.txt

var map = function() {
	var completions = this.statistics.completions.total;
	
	emit(key, {
		created: {
			count: 1,
			length: this.length
		},
		completed: {
			count: completions,
			length: this.length * completions
		}
	});
};

var reduce = function(key, values) {
	var result = {
		created: {
			count: 0,
			length: 0
		},
		completed: {
			count: 0,
			length: 0
		}
	};

	for (var i = 0, l = values.length; i < l; ++i) {
		var value = values[i];

		result.created.count += value.created.count;
		result.created.length += value.created.length;
		result.completed.count += value.completed.count;
		result.completed.length += value.completed.length;
	}

	return result;
};