reselect_args.js

// How to pass arbitrary arguments to reselect selectors (I think?)

// arbitrary selector to capitalize a todo's name for... some reason
// memoized based on the todo object
const selector = createSelector(
  (state, props) => state.todos.get(props.id),
  (todo) => todo.title.toUpperCase()
);

const TodoTitle = React.createClass({
  propTypes: {
    todoId: React.PropTypes.number.isRequired,
  },

  render() {
    return this.props.title;
  }
});

function select(state, props) {
  return {
    title: selector(state, {
      id: props.todoId
    })
  }
}