InvalidOperationException from Series.ValuesAll

[goerch]

The following program

using Deedle;
using System;
using System.Linq;

namespace Bug2
{
    class Program
    {
        static void Main(string[] args)
        {
            var df =
                new FrameBuilder.Columns<int, string> {
                { "first", new SeriesBuilder<int, string> { {0, "1"}, {1, null} }.Series },
                { "second", new SeriesBuilder<int, string> { {0, "2"}, {1, "4"} }.Series }
            }.Frame;
            Console.WriteLine(df["first"].ValuesAll.Count());
        }
    }
}

generates an InvalidOperationException with message {"OptionalValue.Value: Value is not available"}

Is this expected behaviour?

[alexpantyukhin]

I guess it happens because this check there . For now it will not allow to pass null values.

[zyzhu]

Fixed. ValuesAll will call ValueOrDefault which will replace missing value with Unchecked.defaultof<'T>. In the case of missing float, it shall be replaced with 0.0