score:2

Accepted answer
onClick={this.deleteName.bind(null, name)}

score:3

deleteName(nameToDelete) {
    const { names } = this.state;

    this.setState({
        names: names.filter(name => name !== nameToDelete)
    });
}

render() {
    // Simplified to focus on the onClick change
    return names.map(name => <Card>
        ...
        <FloatingActionButton onClick={(e) => this.deleteName(name)} ... />
        ...
    </Card>);
}

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