Feeds:
Posts
Comments

Archive for December, 2009

The omnipotent arrow operator

Posted in tricks on 28/12/2009 | 2 Comments »

Are you familiar with the new, all-mighty, arrow “–>” operator in C++ ? #include <iostream> int main () { unsigned count = 30; while (count –> 0) // count goes to zero std::cout << count << std::endl; }

Read Full Post »

Interesting boost::shared_ptr constructor

Posted in boost on 25/12/2009 | 2 Comments »

The future standard extension (some of it is described in the Technical Report on C++ Standard Library Extensions – TR1) is going to include many libraries already contained within boost. One such library is boost’s Smart Pointers. In this post I would like to show an interesting use-case of the smart_ptr class, through what I [...]

Read Full Post »

Project Euler

Posted in algorithms on 14/12/2009 | Leave a Comment »

I know I’m a little late, but I’ve only recently discovered the interesting site of projecteuler.net. For anybody not familiar with it, Project Euler is a site offering a vast collection of programming puzzles of mathematical nature for anybody to solve. It has a ranking system for its members, allowing every member to see others’ [...]

Read Full Post »

boost::optional and its internals

Posted in boost on 04/12/2009 | 10 Comments »

boost::optional is a very handy generalization of returning a null when there’s nothing to return. Consider a function such as strstr – either the required sub-string is found within the given string, in which case a pointer to it is returned, or a NULL value is returned to indicate that there was no such sub-string. [...]

Read Full Post »

Public operator new and private operator delete

Posted in erroneous on 01/12/2009 | 1 Comment »

If you ever try to define a public custom operator new while keeping the corresponding delete operator private, you’ll end up unable to compile any code that actually invokes the public operator new. The reasoning is quite interesting.

Read Full Post »