public AssetAllocation(IReadOnlyList <AssetPortion> portions)
{
Portions = portions ?? throw new ArgumentNullException(nameof(portions));
if (Portions.Count > 0 && Portions.Select(p => p.Portion).Sum() != 1.0M)
{
throw new ArgumentException("Sum of all portions must be 1.");
}
}
public AssetAllocation(params AssetPortion[] portions)
{
const decimal tolerance = 0.001M;
Portions = portions ?? throw new ArgumentNullException(nameof(portions));
if (Portions.Count > 0 && Math.Abs(Portions.Select(p => p.Portion).Sum() - 1.0M) > tolerance)
{
throw new ArgumentException("Sum of all portions must be 1.");
}
if (Portions.Count > 0 && Portions.Select(p => p.Ticker).Distinct().Count() != Portions.Count)
{
throw new ArgumentException("All tickers must be different.");
}
}