Welcome to the Lounge

John Simmons / outlaw programmer wrote:

They use more stack space than standard parameter passing, and therefore performance suffers.

John Simmons / outlaw programmer wrote:

They use more stack space than standard parameter passing

void Main()
{
    Foo(1, 2);
    Foo(x: 1, y: 2);
}

void Foo(int x, int y) { }

IL_0000:  ldarg.0     
IL_0001:  ldc.i4.1    
IL_0002:  ldc.i4.2    
IL_0003:  call        UserQuery.Foo
IL_0008:  ldarg.0     
IL_0009:  ldc.i4.1    
IL_000A:  ldc.i4.2    
IL_000B:  call        UserQuery.Foo
IL_0010:  ret  

John Simmons / outlaw programmer wrote:

they also have no tangible benefit with regards to code readability.

public void Main()
{
  Foo(1, 2);
  Foo(x: 1, y: 2);
  Foo(y: 1, x: 2);
}

void Foo(int x, int y) { }

IL_0000: ldarg.0
IL_0001: ldc.i4.1
IL_0002: ldc.i4.2
IL_0003: call instance void Foo(int32, int32)
IL_0008: ldarg.0
IL_0009: ldc.i4.1
IL_000a: ldc.i4.2
IL_000b: call instance void Foo(int32, int32)
IL_0010: ldarg.0
IL_0011: ldc.i4.1
IL_0012: stloc.0
IL_0013: ldc.i4.2
IL_0014: ldloc.0
IL_0015: call instance void Foo(int32, int32)
IL_001a: ret

static void Main(string[] args)
{
    int num = 0;
    Test(z: ++num, y: ++num, x: ++num);
    Console.ReadKey();
}

public static void Test(int x, int y, int z)
{
    Console.WriteLine($"X: {x}, Y: {y}, Z: {z}");
}
//Output: X: 3, Y: 2, Z: 1

static void Main(string[] args)
{
    int x = 1, y = 2, z;
    List<int> values = new List<int>() { 3, 4, 5, 6 };
    IEnumerable<int> query1 = values.Where(num => num % 2 == 0);
    IEnumerable<int> query2 = values.Where(num => num % 2 != 0);
    Test(y: y, x: x, query2: query2, query1: query1, z: out z);
    Console.WriteLine($"Z: {z}");
    Console.ReadKey();
}

public static void Test(int x, int y, IEnumerable<int> query1, IEnumerable<int> query2, out int z)
{
    Console.WriteLine("Inside Test:");
    Console.WriteLine($"X: {x}, Y: {y}");
    Console.Write("Even: ");
    foreach (int val in query1)
        Console.Write($"{val} ");
    Console.Write("\nOdd: ");
    foreach (int val in query2)
        Console.Write($"{val} ");
    Console.Write("\n");
    z = 7;
}

dandy72 wrote:

I consider a parameter name to be an implementation detail I should not have to care about--ever