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hettlage (136) [Avatar] Offline
While in this example it shouldn't make a difference, one might consider passing a function to setState in the toggleForm method in listing 2.12, in order to avoid issues caused by the asynchronous nature of setState (cf.

toggleForm = (e) => {
    this.setState((prevState) => (
                showNewCardForm: !prevState.showNewCardForm

Marc Garreau (28) [Avatar] Offline
Thanks for highlighting this. It seems this has become a best practice - we'll revisit related code for the next round of updates.