tuple-options.md

Do we look at tuples like Pair<T1, T2> or like locals?

// current behavior is similar to Pair<T1, T2> except that we’re able to initialize the state of the fields in tuple literals
static void M(string? x, string y)
{
    (string, string) t = (x, y); // warning: (string?, string) mismatch
    t.Item1.ToString();          // warning: may be null
    var t2 = Identity(t);        // infers `(string, string)`
}

// an alternative is to treat tuples like we do locals
static void M(string? x, string y)
{
    (string, string) t = (x, y); // W-warning: x is possibly null
    t.Item1.ToString();          // warning: may be null
    var t2 = Identity(t);        // infers `(string?, string)`
}

We concluded we should stick with current approach.