Converting a nullable type to a non nullable type

[Jeroen De Dauw]

Hey, I have a nullable 2d Double array which I want to convert to a non nullable 2d Double array. Is there any sane way of doing this? Cheers!

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[Rob Philpott]

By nullable 2d array, I presume you mean an array containing double?s. So you want to convert double?[] to double[]... What happens if there is a null in there then?

Regards, Rob Philpott.

[Eric Dahlvang]

        var nullableDoubles = new double?\[2\]\[\];
        nullableDoubles\[1\] = new double?\[\]{null, 1.1, null, 1.2};

        double\[\]\[\] nonNullableDoubles = nullableDoubles.Select(doubleArray=>{
                if(doubleArray==null)
                    return null;
                else
                   return doubleArray.Where(doubleValue => doubleValue.HasValue).Cast<double>().ToArray();}).ToArray();

--EricDV Sig--------- Some problems are so complex that you have to be highly intelligent and well informed just to be undecided about them. - Laurence J. Peters

[Jeroen De Dauw]

At the point where I want to convert from nullable to non nullable, there are no null values. I indeed mean Double?[,];

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[Jeroen De Dauw]

Hey, Since I'm getting an error saying that 'double?[*,*]' does not contain a definition for 'select', I'm assuming I need to import some namespace. Which one? :) Cheers!

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[Eric Dahlvang]

System.Linq

--EricDV Sig--------- Some problems are so complex that you have to be highly intelligent and well informed just to be undecided about them. - Laurence J. Peters