Notes on computers, programming and all the stuff

Simple quiz: what is the length of this string "\xbadcafe"? 5 letters 4 letters 2 letters 1 letter The correct answer is d ...

C++ bitset conserves a memory, but at cost of speed access. Bitset must be slower than set represented as a plain old array, at least when s...

Yes, definitely. Lets see this simple example: $ cat test.cpp int test(int x) { if (x = 1) return 42; else return 0; } $ g++ -c test...

I've observed that some patterns issued to strstr cause significant slowdown. Sample program kill-strstr.c executes strstr(data, pa...

It's not clear how function fopen applied to a directory should behave, manual pages don't say anything about this. So, our common ...

pyDAWG is a python module implementing Directed Acyclic Word Graph , that allow to store set of words in a compacted way. DAWGs are much sm...

Suppose we need to get mask when nonnegative argument is greater then some constant value; in other words, we want to evaluate following exp...