Code Inspection: Redundant 'case' label

Empty case sections before the default case in a switch statement do not make any sense because code corresponding to their conditions will be executed in the default case anyway. JetBrains Rider suggests removing such empty case sections:

            
switch (z)
{
    case 1:
        Console.WriteLine("1");
        break;
    case 2:
    default:
        Console.WriteLine("Not specified");
        break;
}

        

            
switch (z)
{
    case 1:
        Console.WriteLine("1");
        break;
    default:
        Console.WriteLine("Not specified");
        break;
}


        

Note that empty case sections before a non-empty case section are valid and mean that the code in the non-empty case section executes for all cases that go before it.

Last modified: 07 April 2022