Variable argument count?

[Loriel]

Originally Posted by Crow

Would echo arg1, arg2 and arg3 in that order. So you could probably check the size of that array, do some magic, and then pass the arguments to another function.

Could you elaborate on the magic?

Edit: Uh, how do I even call that function to make params[0] actually hold a value?

[Crow]

Originally Posted by Loriel

Could you elaborate on the magic?

No idea what one could do in this case. Though, since this is still Graal, using that array is probably the only way to go. I don't have an idea how exactly you could do this though.

[Programmer]

Originally Posted by Loriel

Could you elaborate on the magic?

Edit: Uh, how do I even call that function to make params[0] actually hold a value?

params[] is set to the total sum of the variables passed into a function. Consider the following:

PHP Code:

function Foo(bar, baz)
{ ... }

Foo(1, 2, true, 999); 


bar would equal 1, and baz would equal 2. However, the params array looks like this:

PHP Code:

{1, 2, true, 999} 


And thus, the above function can literally be transcribed into:

PHP Code:

function Foo()
{
    bar = params[0];
    baz = params[1];
} 


This is not dissimilar to C#'s implementation of parameters, if you're into that:

PHP Code:

// C#
private void Foo(params object[] parameters)
{
     var bar = parameters[0];
     var baz = parameters[1];
} 


[Loriel]

Originally Posted by Programmer

params[] is set to the total sum of the variables passed into a function. Consider the following:

PHP Code:

function Foo(bar, baz)
{ ... }

Foo(1, 2, true, 999); 


I cannot quite get this to work. I inserted echoo({bar, baz}); into the function body for testing. Indeed it outputs 1,2 as I expected.

And thus, the above function can literally be transcribed into:

PHP Code:

function Foo()
{
    bar = params[0];
    baz = params[1];
} 


Now when I do this, the output is "",0. If I say echo(params), I do not get any output at all. Am I missing something here?

This is not dissimilar to C#'s implementation of parameters, if you're into that:

PHP Code:

// C#
private void Foo(params object[] parameters)
{
     var bar = parameters[0];
     var baz = parameters[1];
} 


I think it is indeed dissimilar, because I could call that function with a single array instead of a list of parameters.

[Programmer]

Originally Posted by Loriel

I cannot quite get this to work. I inserted echoo({bar, baz}); into the function body for testing. Indeed it outputs 1,2 as I expected.

Try:

PHP Code:

function Foo(bar, baz)
{
    echo({ bar, baz });
    echo(params);
}

Foo(1, 2, true, 999); 


Will echo:

1, 2
-- Comment: 'true' is represented as 1.
1, 2, 1, 999

Originally Posted by Loriel

Now when I do this, the output is "",0. If I say echo(params), I do not get any output at all. Am I missing something here?

0 in Graal is literally translated as 'null', and will print absolutely nothing to the RC. An empty string literal will obviously print nothing as well.

Originally Posted by Loriel

I think it is indeed dissimilar, because I could call that function with a single array instead of a list of parameters.

In C#, it's similar in this manner:

PHP Code:

// C#
private void Foo(params object[] parameters)
{
     var bar = parameters[0];
     var baz = parameters[1];
     
     Console.WriteLine("Result: " + bar + ", " + baz);
}

Foo(1, 2);

// OUTPUT:
// Result: 1, 2