hash with file instead of array
Is it possible to use hash function but with File instead of Array, and it’s gonna be saving the record in a file position and then search will fseek to that position, but I’m not sure how to open a file with let’s say 1000 line, do you think that method could work?
Built-in Context-and-Input-to-Output-Hashing in Compilers
Why doesn’t (open source) compilers contain builtin funtionality for (shared) caching and reuse-fetching (using SHA1-hash of compiler-version, build-flags, target-platform and inputs) of executable output objects (ELF or COFF) similar to what ccache does and scons?
Directory structure (file system design)
I was looking at how file systems are designed and noticed that most places say that the directory hierarchy can be implemented using a hash table.
History of Associative Array?
In quite a lot of modern scripting languages (e.g. Perl, Python, Ruby, PHP, Lua, JavaScript), associative arrays are supported as a primitive or first-class data type (with various names like map, dictionary, hash, etc.) in a very convenient syntax, making convenient data-driven paradigms possible.
Looking for a non-cryptographic hash function that returns a single character
Suppose I have a dictionary of ASCII words stored in uppercase. I also want to save those words into separate files so that the total word count of each file is approximately the same. By simply looking at the word I need to know which file it should be in (if it’s there at all). Duplicate words should go into the same file and overwrite the last one.
Hash Algorithm Randomness Visualization
I’m curious if anyone here has any idea how the images were generated as shown in this response: Which hashing algorithm is best for uniqueness and speed?
Basic memcached question
I have been reading up on distributed hashing. I learnt that consistent hashing is used for distributing the keys among cache machines. I also learnt that, a key is duplicated on mutiple caches to handle failure of cache hosts. But what I have come across on memcached doesn’t seem to be in alignment with all this. I read that all cache nodes are independent of each other and that if a cache goes down, requests go to DB. Theres no mention of cache miss on a host resulting in the host directing the request to another host which could either be holding the key or is nearer to the key.
How to test if a hashing algorithm is good? [duplicate]
Possible Duplicate:
Which hashing algorithm is best for uniqueness and speed?
Concept behind SHA-1 Checksum
What’s the basis behind SHA-1 or SHA-2 or other Checksum algorithms?
I read about it here http://en.wikipedia.org/wiki/SHA-1#Data_Integrity
Hash function classification
On the internet, I’ve come across this question: