Who can explain this setState call in React

[rv]

Greetings,

I came across this call and don't understand how it works, which concept is behind?

    const todos = [...this.state.todos, todo]
    this.setState({todos, inputValue:''}, () => { console.log(this.state)})

I was expecting

    this.setState({todos: todos, inputValue:''}, () => { console.log(this.state)})

Thank you.

[rv]

C'est bon j'ai eu la réponse https://stackoverflow.com/questions/61969813/who-can-explain-this-setstate-call-in-react/61969923