help cast

[sdvcn via Digitalmars-d]

        dchar v11=dchar.max;
        auto vp11 = [v11];
        
        auto v2 = cast(ubyte[]) (vp11);   //v2.length=4
        auto v22 = cast(ubyte[])( [v11]); //v2.length=1


y22.length <> v2.length