title: How to use dart Map.fromEntries() constructor?
body: <p>I'm trying to learn the Dart programming language.</p>
  
  <p>I didn't understand the <code>Map.fromEntries()</code> factory constructor. Looking for an usage example.</p>
  
  <p>link : <a href="https://api.dartlang.org/stable/2.1.0/dart-core/Map/Map.fromEntries.html" rel="nofollow noreferrer">Map.fromEntries()</a></p>