public static void Read <T1, T2>(this Dictionary <Tuple <T1, long>, T2> _this, AssetStream stream)
where T1 : IAssetReadable, new()
where T2 : IAssetReadable, new()
{
int count = stream.ReadInt32();
for (int i = 0; i < count; i++)
{
Tuple <T1, long> key = stream.ReadTupleTLong <T1>();
T2 value = new T2();
value.Read(stream);
_this.Add(key, value);
}
}
