CODEWITHSUNDEEP
c#hashset
Adam
Adam

Reputation: 10016

Concise way to get the single element contained in a HashSet, C#

I know for sure that at a particular point in my program a HashSet I've constructed will only contain a single element. I know I can get the element by doing this:

foreach (int num in myHashSet)
{
    return num;
}

But I don't like the idea of using a for loop when I'm certain that the HashSet only contains a single item. I know HashSets are unordered and understand why using, say, an array-style index won't work. Are there any solutions that will make it clear that only a single element exists in the HashSet? I feel that with a loop this property isn't clear.

Upvotes: 0

Views: 830

Answers (1)

simon at rcl
simon at rcl

Reputation: 7344

HashSet<int> ihs = new HashSet<int>();
ihs.Add(12);
if (ihs.Count() == 1)
{
    int x = ihs.First();
}

Upvotes: 4

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