title: How to pass multiple objects or values in FlatList extraData
body: <p>I have a situation where I need to pass both State and Props in the FlatList extraData.</p>
  
  <p>I tried something like this but <strong>didn't</strong> work.</p>
  
  <pre><code> &lt;FlatList
        numColumns={1}
        data={this.props.artists}
        renderItem={this.renderArtistItem}
        initialNumToRender={15}
        keyExtractor={item =&gt; item.id}
        extraData={(this.state, this.props.league)}
      /&gt;
  </code></pre>
  
  <p>How to do that?</p>