Here are some interesting links I found on the internet. Git Checkout Github pull request Interesting topics Programming Languages Design - Features/Program Validity

I have discovered placement new operator when I worked on my Java Virtual Machine. It is useful when you need to dynamically create new instance of class and place it into already allocated memory. This is not so common scenario, but it is necessary if you want to write your own memory allocation system. Here is short code example, how to use it: #include <iostream>using namespace std; classA { int data = 0; A() { cout << "Constructor called" << endl; } ~A() { cout << "Destructor called" << endl; } } int main(int argc, const char** arv) { const int MEMORY_SIZE = 65536; // 64 kB char* rawMemory = new char[MEMORY_SIZE]; // allocating own memory pool A* object = new(rawMemory) A(); // delete object; // CANNOT CALL delete, it would lead to memory corruption object->~A(); // manually call destructor, if you need to get rid of object delete[] rawMemory; // at the end, release ALL allocated memory return 0; } There are some circuimstances for using placement new.

In this blog post I would like to describe memory layout and memory alignment and explain, why it is important. Memory pages In modern computers memory is divided into chunks called pages. On most systems, page is usually around 4 KiB. When you need to allocate some memory, operating system will allocate it to you page by page. Allocated memory is usally rounded to whole pages, so allocating 5 KiB of memory would (mostly) end up allocating 2 pages, 8 KiB in total.

int main(int argc, char const *argv[]) { string myString; cout << "input a string: "; getline(cin, myString); int length = myString.length(); char charArray = new char * [length]; charArray = myString; for(int i = 0; i < length; ++i){ cout << charArray[i] << " "; } return 0; }

I just created this blog using Jekyll and GitHub pages. I hope it was the right choice and I will be happy with Jekyll. I plan to write about software development in general. I’m very interested in runtime systems, so I will write something about Java and .NET soon. I also love computer science in general, so maybe I will write about some stuff I learned in school too.