Figure 1 shows a simple hash table with keys and values shown. The hash function is the modulo 10 function; therefore, ten buckets are needed because only ten results can come from a modulo 10 ...

Using a power of two means you just chop off the top bits of the Hash to make it fit in the table. The reasoning is also dead simple, bitwise operations on CPU are way cheaper than Modulo.

It isn't often that a decades-old assumption underpinning modern technology is overturned, but a recent paper based on the work of an undergraduate and his two co-authors has done just that.

The subject? Hash tables. These are very useful tools to have in your arsenal. It just takes a while to both (a) understand them and their use fully and (b) wrap your head around the extremely ...

The Fibonacci hash, on the other hand, uses the golden ratio rather than the modulo function to map the final location of the data, resulting in many fewer instances of collisions like these while ...

The result has been an almost endless number of hashing methods and tables. Facebook has faced this problem as well. Within its offices, Facebook developers have created numerous hash table ...

Researchers have shown how a flaw that is common to most popular Web programming languages can be used to launch denial-of-service attacks by exploiting hash tables. Announced publicly on ...