How can I intentionally discard a [[nodiscard]] return value?

Question

Say I have

[[nodiscard]] int foo ()
{
    return 0;
}

int main ()
{
    foo ();
}

then

error: ignoring return value of ‘in         


        

Answer 1

Cast it to void:

[[nodiscard]] int foo ()
{
    return 0;
}

int main ()
{
    static_cast(foo());
}

This basically tells the compiler "Yes I know I'm discarding this, yes I'm sure of it."