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php Programming Glossary: bijectiveAlgorithm to get all possible string combinations from array up to certain length http://stackoverflow.com/questions/12293870/algorithm-to-get-all-possible-string-combinations-from-array-up-to-certain-lengt nice if the function to generate the combinations was bijective so that we knew the unique combination that results from any.. new base. As I've come to learn this is fittingly called a bijective numeration . Taking an example in base 6 we would have Base..
Perfect Hash Function for Human Readable Order Codes http://stackoverflow.com/questions/9551091/perfect-hash-function-for-human-readable-order-codes of a sequence of independent steps the overall function is bijective reversible if and only if every single one of those steps is... equivalent to this key invert_order_of_bits key # clearly bijective constant invert_order_of_bits CONSTANT key key ^ constant ^.. ^ key NUM_BITS key invert_order_of_bits key # clearly bijective So all we need is to show that this key key ^ CONSTANT ^ key..
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