c# - Define: What is a HashSet? - Stack Overflow
Dec 30, 2010 · HashSet The C# HashSet data structure was introduced in the .NET Framework 3.5. A full list of the implemented members can be found at the HashSet MSDN page. Where …
How can `HashSet<T>.Contains` be O(1) with this implementation?
Okay, so how "search complexity in hashset is O (1)"? It's not. The worst case complexity is proportional to the number of items. It's O (1) on average.2 If all objects fall to the same …
.net - HashSet vs. List performance - Stack Overflow
It's clear that a search performance of the generic HashSet<T> class is higher than of the generic List<T> class. Just compare the hash-based key with the linear approach in the …
Concurrent HashSet<T> in .NET Framework? - Stack Overflow
Your implementation is correct. The .NET Framework does not provide a built-in concurrent hashset type, unfortunately. However, there are some workarounds. ConcurrentDictionary …
What is the difference between HashSet<T> and List<T>?
Jun 18, 2011 · A HashSet<T> is a class designed to give you O(1) lookup for containment (i.e., does this collection contain a particular object, and tell me the answer fast). A List<T> is a …
What's the difference between HashSet and Set? - Stack Overflow
Apr 16, 2016 · 1 HashSet is a class derived from Set interface. As a derived class of Set, the HashSet attains the properties of Set. Important and the most frequently used derived classes …
Difference between HashSet and HashMap? - Stack Overflow
Apart from the fact that HashSet does not allow duplicate values, what is the difference between HashMap and HashSet in their implementation? It's a little bit vague because both use hash …
How does HashSet compare elements for equality? - Stack Overflow
Jan 21, 2012 · HashSet<T> constructor receive object what implement IEqualityComparer<T> for adding new object. If you want to use method in HashSet you need to overrride Equals() and …
Newest 'hashset' Questions - Stack Overflow
Sep 13, 2025 · In Java HashSet, when a collision occurs, the HashMap stores multiple entries in the same bucket using a linked list. Then in the case of LinkedHashSet, LinkedHashMap will …
How can I make an Observable Hashset in C#? - Stack Overflow
How can I make an Observable Hashset in C#? Asked 16 years, 8 months ago Modified 1 year, 8 months ago Viewed 17k times