import std.stdio;

​

void main()

{

    string[string] aa;

    aa["name"] = "Arthur";

    aa["quest"] = "seek the Holy Grail";

    aa["favoriteColor"] = "blue";

​

    with (aa.keysAsVars)

    .writefln("My name is %s, I %s, and my favorite color is %s.",

        name, quest, favoriteColor);

}

​

struct KeysAsVars(K, V)

{

    V[K] aa;

    V opDispatch(string key)() => aa[key];

}

​

KeysAsVars!(K, V) keysAsVars(K, V)(V[K] aa)

{

    return typeof(return)(aa);

}