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var context1 = new ModelDataContext(new SqlConnection("server=A;database=B"));
var context2 = new ModelDataContext(new SqlConnection("server=C;database=D"));

CreateNewContext(context1, out var newConn, out var newContext);

// As expected:
Console.WriteLine(newConn.ConnectionString == context1.Connection.ConnectionString); // True

// Not as expected:
Console.WriteLine(newContext.Connection.ConnectionString == context1.Connection.ConnectionString); // False
Console.WriteLine(newContext.Connection.ConnectionString == newConn.ConnectionString); // False
Console.WriteLine(newContext.Connection == newConn); // False

// Also not as expected:
Console.WriteLine(newContext.Connection.ConnectionString == context2.Connection.ConnectionString); // True

Richard Deeming wrote:

You could still break it though:

Main(...)
{
    new Program().Run();
}

public class Singleton
{
    private Singleton _current;

    public Singleton Current
    {
        get
        {
            if (_current == null)
            {
                _current = new Singleton();
            }

            return _current;
        }
    }

    private Singleton()
    {
    }
}

OriginalGriff wrote:

[~forename~}

Lopatir wrote:

missing a close brace in your first // sometimes me example.

list.WhenNotEmpty()?.ForEach(s => s.Prepare(out var r)?.Manipulate(r));