public static double?[] ToNullable(this double[] sourceArray, bool[] nullMask)
{
ThrowUtils.ThrowIf_True(nullMask.Length != sourceArray.Length, "Cannot convert to nullable array because nullMask.Length != sourceArray.Length");
double?[] nullableArray = new double?[sourceArray.Length];
for (int i = 0; i < nullableArray.Length; i++)
{
nullableArray[i] = nullMask[i] ? null : (double?)sourceArray[i];
}
return(nullableArray);
}
public static List <T> Merge <T>(Func <T[], T> mergeFunc, params IList <T>[] collections)
{
if (collections.Length == 0)
{
return(new List <T>());
}
int count = collections[0].Count;
ThrowUtils.ThrowIf_True(collections.Any(c => c.Count != count));
T[] tmp = new T[collections.Length];
List <T> result = new List <T>(count);
for (int i = 0; i < count; i++)
{
for (int j = 0; j < collections.Length; j++)
{
tmp[j] = collections[j][i];
}
result.Add(mergeFunc(tmp));
}
return(result);
}