EvoCalculator.Core/EvoCalculator.Core.Base/Columns/BaseColumnWithXIRR.cs

using System;
using EvoCalculator.Core.FinanceFormulas;
using EvoCalculator.Core.Models.Calculation.Models;

namespace EvoCalculator.Core.Base.Columns
{
    public class BaseColumnWithXIRR : BaseColumn<decimal>
    {
        public BaseColumnWithXIRR(int count, BaseColumn<DateTime> dateTempColumn) : base(count)
        {
            Dates = dateTempColumn.Values;
        }

        private DateTime[] Dates { get; }

        private Flow[] Flows
        {
            get
            {
                var flows = new Flow[Values.Length];
                for (var i = 0; i < Values.Length; i++)
                    flows[i] = new Flow
                    {
                        Date = Dates[i],
                        Value = Values[i]
                    };

                return flows;
            }
        }

        public double IRR
        {
            get
            {
                var XIRR = new XIRR(Flows);
                return XIRR.GetResult();
            }
        }
    }
}