When are hash tables used?

Question

C++ / C#

I'm currently learning C# collections. Came to Hashtable. Tell me how often and for what tasks (your examples) are they used? What is their main difference?

Answer 1

A hash table is a dictionary, similar to an array, but instead of numeric indexes, it has named keys. It is better to abandon the hashtable in favor of a full-fledged generic dictionary Dictionary, it works without type casting in the internal implementation and is faster than Hashtable