Hi have an issue with Linq. I have an array of double values with duplicate entries. I want to extract only distinct values from it. I have the following code which doesn't work correctly.
double[] dIds = GetIds(); //dIds has more than 10,000 items
var itemIdCollection = from id in dIds.Distinct()
select id;
Console.WriteLine(itemIdCollection.count().ToString()); //count is just 2 !!!!
Can you please give me a solution on this?
Thank you,
First off, you don't have to do that freaky select. Just call dIds.Distinct(). Second, I can guarantee you that it works on any array of doubles. Your doubles are NOT different from everybody else's doubles.
Obviously, if Distinct() is returning an enumerable of a count of 2 (btw, Console.WriteLine(itemIdCollection.Count()) is sufficient) it is because GetIds() returns an array containing only two distinct doubles.
Your assumptions, they are incorrect.
Try this:
List<double> x = new List<double>()
{
3, 4, 5, 6, 7, 7, 7, 8, 8
};
List<double> distinct = x.Distinct().ToList();
distinct.ForEach(y => Console.WriteLine(y));
Console.ReadKey();
Are you generating new random IDs in your GetIds() function? If so, remember you should be instantiating Random outside the function...
countwritten with a lowercase C? Is this your real code?