Populating very large hashtables

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

I'm presently constructing my hashtable by looping through the result-set (an array that I pulled out of SQL as a result set) and using ".add" for each line ...

How to deal with a very big hash table?

seems like if your hashtable doesn't fit in memory then it doesn't. What is the hash table for?

How to use PowerShell Hash Tables to Quickly Search Large Data ...

This key/value combination is what makes hash tables powerful and very fast at accessing data. The “key” should be unique and will be what you ...

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

Very nice use cases!! Good stuff here. We recently interviewed ... The big deal was with using hashtable (and main point of this article).

Everything you wanted to know about hashtables - PowerShell

Since it uses CliXml, it's memory intensive and if you are cloning huge hashtables, that might be a problem. Another limitation of the CliXml is ...

A perfect implementation of a hashtable with a very large number of ...

my idea is that instead of allocating a new hash table, we'll re-alloc the existing one, and then start moving entries from the lower half to ...

Solution for hash-map with >100M values : r/java - Reddit

... big of chunk of memory. The idea here is to create a "very large array" where the data is actually kept offheap. The question is just how ...

Can a hashtable update different values for many users at once ...

So, I build a hash from the CSV containing the Unique ID as the key and populate it with the specific values for A/D attributes. ... VERY large.

Hash Tables - problems with large datasets - SAS Communities

Ok before someone slaps me for doing something stupid, I realized that defineData(all:'y') with that large of a dataset was crazy. So I have ...

Create a Hash Table in PowerShell that Contains Hash Tables

Remember, that a hash table consists of one or more key/value pairings. For example, I create a hash table that consists of three items. This ...

Basics of Hash Tables Tutorials & Notes | Data Structures

However, in cases where the keys are large and cannot be used directly as an index, you should use hashing. In hashing, large keys are converted into small keys ...

How to implement a hash table (in C) - Ben Hoyt

When the hash table gets too full, we need to allocate a larger array and move the items over. This is absolutely required when the number of items in the hash ...

I Wrote The Fastest Hashtable - Probably Dance

Here google::dense_hash_map beats my new hash table, but not by much. My table is still very fast, just not quite as fast as dense_hash_map. The ...

Hash table performance and memory efficiency

Therefore, for a given hash function and and collision resolution scheme, the larger table is also faster because it has to resolve the less collisions, and ...

Is it better to have 100 small hash tables or one big hash ... - Quora

With the load factor you can trade time versus space. Choose the load factor too low (much less than 1) and you will have great performance but ...

Quick tip: PowerShell performance - Blimped

Now querying in an array list of 300.000 rows data using Where-Object can also be slow. In some situations you might consider using a hash table ...

Hash Tables - Crafting Interpreters

The birthday paradox tells us that as the number of entries in the hash table increases, the chance of collision increases very quickly. We can pick a large ...

Learn Hash Tables in 13 minutes #⃣ - YouTube

... large data sets. ... Wow, this is a really good introduction to hash tables! 5:17 · Go to ...

How are hash table's values stored physically in memory?

The second point is that you try to avoid large unused gaps because that costs memory. The third point is that you avoid changing your hashing ...

Writing a damn fast hash table with tiny memory footprints

Here is a very basic table for some high performance hash table I found. The input is 8 M key-value pairs; size of each key is 6 bytes and ...