title: c# version 8 Target-typed new-expressions error requires (), [], or {} after type
body: <p>I'm following a tutorial to learn the new features of c# version 8 using .Net Core 3.1</p>
  
  <p>I'm working with latest version of Visual Studio 2019.
  while playing with some exercises i fond errors in the next code</p>
  
  <p>Subject: <strong>Target-typed new-expressions</strong></p>
  
  <pre><code>Dictionary&lt;string, List&lt;int&gt;&gt; field = new Dictionary&lt;string, List&lt;int&gt;&gt;();
  Dictionary&lt;string, List&lt;int&gt;&gt; field = new(); //this throws the error "requires (), [], or {} after type requires (), [], or {} after type"
  </code></pre>
  
  <p>did i miss something?
  i also tried to add to the project </p>
  
  <pre><code>&lt;LangVersion&gt;8.0&lt;/LangVersion&gt;
  </code></pre>
  
  <p>any ideas?</p>