internal TypedDataFrame(DataFrame inner) : base(inner)
{
Column inner1;
inner.TryGetColumnTranslated(0, out inner1);
Column1 = new TypedColumn <TCol1>(inner1);
}
/// <summary>
/// Converts the column to a typed column of the given type.
///
/// Throws if the conversion isn't allowed.
/// </summary>
public TypedColumn <T> Cast <T>()
{
if (!OnDiskType.CanMapTo(typeof(T), Parent.Metadata.Columns[TranslatedColumnIndex].CategoryLevels))
{
throw new InvalidCastException($"Cannot convert {Type.Name} to {typeof(T).Name}");
}
var typedColumn = new TypedColumn <T>(this);
return(typedColumn);
}