Thomas Levesque • 5/15/2020

Things every C# developer should know #1: hash codes

This technical article for C# developers clarifies common misconceptions about the GetHashCode method. It explains that a hash code is not a unique ID and cannot test equality, but is essential for efficient key lookups in hash table-based collections like Dictionary<TKey, TValue> and HashSet<T>. The piece serves as an educational guide on a fundamental but often misunderstood concept in software development.

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#c #Gethashcode #Hash Codes