How I didn't know how powerful and fast hashtables are

How I didn't knew how powerful and fast hashtables are : r/PowerShell

Just for making your post complete, here a comparison of addition operations I'm (now...) aware of. Never know that you could annotate a ...

How I didn't know how powerful and fast hashtables are - Evotec

Using add method is the fastest, and with for/foreach even faster than using ForEach-Object (which has % as an alias).

Populating very large hashtables - how to do so most efficiently?

... big deal). I did not see a significant performance difference using a Dictionary instead of a HashTable on the first run, but after the ...

I Wrote The Fastest Hashtable - Probably Dance

The reason for this is that there are more hash collisions when the table is more full. So you can see the cost go up until at some point the ...

I Wrote My Fastest Hashtable - Hacker News

The solution is to use better hash functions, not prime hash table sizes. Prime modulus will only make the problems harder to notice.

How fast is hashing and is it always regarded as an O(1) operation?

I know bitwise operations are significantly faster and I know the SHA algorithms make use of them, but still, when people say hashtable lookup ...

Super high performance C/C++ hash map (table, dictionary) [closed]

Then profile your code and see if that code is the bottleneck. Only then would I suggest to precisely analyze your requirements to find a faster ...

Writing a damn fast hash table with tiny memory footprints

Almost all major hash implementation use power of 2 table size, so that the modulo is just one bitwise and operation. The problem with power of ...

Writing a Very Fast Hash Table with Tiny Memory Footprints

I don't know for other peoples need on non power of 2 tables. My target is to build large scale hash tables and other data structures. The ...

Optimizing Open Addressing - Max Slater

Your default hash table should be open-addressed, using Robin Hood linear probing with backward-shift deletion.

Hash Table Performance Tests - Preshing on Programming

My test program is a simple word-counting application. It reads a text file and creates a container, mapping each word to its number of occurrences.

Taking Hash Tables Off The Shelf. Truth time - Medium

Hash tables leverage constant time search, which is what makes them so powerful. Without using hash tables, we have to search through an entire dataset.

Faster than Rust and C++: the PERFECT hash table - YouTube

I had a week of fun designing and optimizing a perfect hash table. In this video, I take you through the journey of making a hash table 10 ...

Hash Tables - Crafting Interpreters

Much of this power comes from one metric: given a key, a hash table returns the corresponding value in constant time, regardless of how many keys are in the ...

I Wrote a Faster Hash Table - Probably Dance

If you know that you will never do that and that you have a good hashing function that gives you few bucket conflicts, then using a power of two ...

What is a hash table anyways? - Medium

... hash tables I sort of oversimplified how powerful a hash function is. I didn't know what it meant other than a hash ... Tables are blazing fast ...

A better hash table (in C) - YouTube

... learn to program and become a more ... CppCon 2017: Matt Kulukundis “Designing a Fast, Efficient, Cache-friendly Hash Table, Step by Step”.

High-performance C++ hash table implementation

I had a similar problem, I need a hash table that was not just faster but also more memory efficient, that's why I created the patchmap. The ...

Scientists Find Optimal Balance of Data Storage and Time

Wesley Peterson identified the main technical challenge that hash tables pose: They need to be fast, meaning that they can quickly retrieve the ...

C++ STL: Order of magnitude faster hash tables with Policy Based ...

The Policy Hash Table has 3-6x faster insertion/deletion and 4-10x increase for writes/reads. As far as I can tell, there are no downsides.