c++ Programming Glossary: hashes
Check if value exists across 16 containers http://stackoverflow.com/questions/10605469/check-if-value-exists-across-16-containers because it happened to stumble upon a different value that hashes to the exact same key. Furthermore even if this were the case..
what are the fast algorithms to find duplicate elements in a collection and group them? http://stackoverflow.com/questions/1332527/what-are-the-fast-algorithms-to-find-duplicate-elements-in-a-collection-and-grou by themselves to be certain they are duplicates. So hashes do not apply because virtually they shift the comparison to..
Is it possible to hash pointers in portable C++03 code? http://stackoverflow.com/questions/14167455/is-it-possible-to-hash-pointers-in-portable-c03-code or if you want an alternative approach just combine the hashes of the individual bytes in the pointer. All this requires to..
Saving passwords inside an application http://stackoverflow.com/questions/1484440/saving-passwords-inside-an-application to other applications. First off that means that salts and hashes are not relevant you need to reverse the masking operation and..
STL or Qt containers? http://stackoverflow.com/questions/1668259/stl-or-qt-containers . Some STL implementations are especially bad. provide hashes which are not available unless you use TR1 The QTL has a different..
Count the number of adjacent boxes http://stackoverflow.com/questions/17328004/count-the-number-of-adjacent-boxes by first partitioning your input rectangles using two hashes one based on the x location of the rectangle and the other based..
How to properly hash the custom struct? http://stackoverflow.com/questions/19195183/how-to-properly-hash-the-custom-struct field2 string field3 ... I want to hash it using separate hashes of some of it's fields say std hash field1 and std hash field2.. it's fields say std hash field1 and std hash field2 . Both hashes are in a set of possible values of the type size_t . What is..
Why isnt int pow(int base, int exponent) in the standard C++ libraries? http://stackoverflow.com/questions/2398442/why-isnt-int-powint-base-int-exponent-in-the-standard-c-libraries thousands and thousands of collection the standard library hashes btrees red black trees dictionary arbitrary maps and so forth..
Is there a standard C++ function object for taking apart a std::pair? http://stackoverflow.com/questions/372695/is-there-a-standard-c-function-object-for-taking-apart-a-stdpair wished I had something like the keys function for Perl hashes. For example it would be nice to run std transform on a std..
Programming Contest Question: Counting Polyominos http://stackoverflow.com/questions/4650762/programming-contest-question-counting-polyominos public class Main private int countPolyminos int n hashes.clear count 0 boolean matrix new boolean n n createPolyominos.. matrix n return count private List Integer hashes new ArrayList Integer private int count private void createPolyominos.. int hash hashMatrixOrientationIndependent matrix if hashes.contains hash count hashes.add hash return Here is the..
MD5 and SHA1 C++ hashing library http://stackoverflow.com/questions/4678447/md5-and-sha1-c-hashing-library to use with my C program I only need to generate two hashes from a string. I've tried with crypto and mhash and I didn't..
tr1::unordered_set union and intersection http://stackoverflow.com/questions/896155/tr1unordered-set-union-and-intersection B will be going to the same hash bucket assuming that both hashes are using the same hash function . That should give you decent..
How to write qHash for a QSet<SomeClass*> container? http://stackoverflow.com/questions/9126470/how-to-write-qhash-for-a-qsetsomeclass-container A common way to hash containers is to combine the hashes of all elements. Boost provides hash_combine and hash_range..
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