Let f be a variadic function:

Result f(...);

How to implement variadic function g which calls f with the same arguments as one it receives?

Result g(...) {
  // ...
}

On Sunday, 24 February 2019 at 13:09:15 UTC, Victor Porton wrote:
> Let f be a variadic function:
>
> Result f(...);
>
> How to implement variadic function g which calls f with the same arguments as one it receives?
>
> Result g(...) {
>   // ...
> }

void f(A...)(A a)
{
    foreach(t; a)
        writeln(t);
}

void g(A...)(A a)
{
    f(a);
}

g(1, 2, 3);

On Sunday, 24 February 2019 at 13:09:15 UTC, Victor Porton wrote:
> Let f be a variadic function:
>
> Result f(...);
>
> How to implement variadic function g which calls f with the same arguments as one it receives?
>
> Result g(...) {
>   // ...
> }

I don’t know if you can, but if at least g is a variadic template function, you can:
https://run.dlang.io/is/fhxZuV

Bastiaan.

On Sunday, 24 February 2019 at 13:09:15 UTC, Victor Porton wrote:
> Let f be a variadic function:
>
> Result f(...);
>
> How to implement variadic function g which calls f with the same arguments as one it receives?
>
> Result g(...) {
>   // ...
> }

If you must use C-style variadic arguments, then your only choice is to do it the same way you would in C: write a version of `g` that accepts a va_list (like vprintf(3)), and have `f` call that.