gistfile1.js

render: function() {
	this.$el.append(this.topicViews.map(function(view) {
		return view.render().el;
	}));

	return this;
}

render: function() {
	this.$el.append(
		_.pluck(_.invoke(this.topicViews, 'render'), 'el')
	);

	return this;
}