Re: How should I return multiple const values from a function?

[Paul Backus via Digitalmars-d-learn]

On Monday, 2 January 2023 at 23:25:48 UTC, Charles Hixson wrote:

They syntax I wanted was something like:

bool func (const out Key k, const out Val v) { k = this.key.dup; v = this.val.dup; return true;    }

This works for me:

    import std.typecons;

    auto func(Key, Value)(Key k, Value v)
    {
        return Tuple!(const(Key), const(Value))(k, v);
    }

    void main()
    {
        string k;
        uint v;
        auto result = func(k, v);

        static assert(is(typeof(result[0]) == const(string)));
        static assert(is(typeof(result[1]) == const(uint)));
    }