Top "Hashtable" questions

A hash table in programming is a collection that uses a hash function to map identifying values (keys) to their associated values.

.NET HashTable Vs Dictionary - Can the Dictionary be as fast?

I am trying to figure out when and why to use a Dictionary or a HashTable. I have done a …

c# .net collections dictionary hashtable
Is a Python dictionary an example of a hash table?

One of the basic data structures in Python is the dictionary, which allows one to record "keys" for looking up "…

python hash dictionary hashmap hashtable
Hash table runtime complexity (insert, search and delete)

Why do I keep seeing different runtime complexities for these functions on a hash table? On wiki, search and delete …

algorithm data-structures hash time-complexity hashtable
iterating through Enumeration of hastable keys throws NoSuchElementException error

I am trying to iterate through a list of keys from a hash table using enumeration however I keep getting …

java hashtable enumeration key
How do HashTables deal with collisions?

I've heard in my degree classes that a HashTable will place a new entry into the 'next available' bucket if …

java hashtable collision-detection
Hash table in JavaScript

I am using a hash table in JavaScript, and I want to show the values of the following in a …

javascript hashtable
Hash Table/Associative Array in VBA

I can't seem to find the documentation explaining how to create a hash table or associative array in VBA. Is …

vba hash hashtable associative-array
Iterating over and deleting from Hashtable in Java

I have a Hashtable in Java and want to iterate over all the values in the table and delete a …

java iterator hashtable
Tuples( or arrays ) as Dictionary keys in C#

I am trying to make a Dictionary lookup table in C#. I need to resolve a 3-tuple of values to …

c# dictionary hashtable tuples
Simple hashmap implementation in C++

I'm relatively new to C++. In Java, it's easy for me to instantiate and use a hashmap. I'd like to …

c++ hashmap hashtable