Absolutely you can do that. My example uses `string` but it would work just the same with `Client`.

    void Main()
    {
    	IList<string> list = new List<string>();
    	
    	if (list.FirstOrDefault() is string s1) 
    	{
    		Console.WriteLine("This won't print as the result is null, " +
                              "which doesn't match string");
    	}
    	
    	list.Add("Hi!");
    
    	if (list.FirstOrDefault() is string s2)
    	{
    		Console.WriteLine("This will print as the result is a string: " + s2);
    	}
    }

I'd like to grab the first instance of an enumerable and then perform some actions on that found instance if it exists (`!= null`).  Is there a way to simplify that access with C#7 pattern Matching?

Take the following starting point:
      

    

    IEnumerable<Client> clients; /// = new List<Client> {new Client()};
    Client myClient = clients.FirstOrDefault();
    if (myClient != null)
    {
        // do something with myClient
    }

Can I combine the call to `FirstOrDefault` with the `if statement` something like this:

   

    if (clients.FirstOrDefault() is null myClient)
    {
        // do something with myClient
    }

I don't see any similar examples on [MSDN Pattern Matching][1] or [elsewhere on Stack Overflow][2]

[1]: https://learn.microsoft.com/en-us/dotnet/csharp/pattern-matching
[2]: https://stackoverflow.com/q/41504414/1366033