It seems that there is some misunderstanding about my previous post. The purpose was never for measuring C++ performance but for better understanding of how polymorphism is implemented in C++, and make people aware that those extra power is not come for free. This is why I choose trivial cases and disable compiler optimization. Trivial cases for make the time penalty observable, disabling compiler optimization for ensure that assembly code is generated from C++ source code directly so it could be easier for analysis. These time penalty actually may not be a problem in real life as a considerable part of the overhead will be eliminated by compiler optimization.

One of the things that I most liked about ActionScript when I first began to use it was how easy it was to pick up after using Java for several years. I have blogged about some of the similarities Java and ActionScript share, but there are also some differences (such as ActionScript's support for switching on Strings). In this brief blog entry, I will demonstrate one subtle difference in behavior in ActionScript from what I am used to from years of C++ and Java experience.

In this tutorial, explore the Eclipse C Development Tooling (CDT) project and how it allows you to work with C- and C++-based projects. Furthermore, learn how to install open source tools to help develop native applications for the iPhone platform on Windows and Linux, and learn about the source code of a basic iPhone application in Objective-C.

Google's Darin Fisher, a software engineer on the Chrome project, talks about how the Web browser was developed and tested. As you might suspect, agility, speed, and testing were all critical.

A little while ago I was asked to make a small circuit based around a microcontroller and a Digital to Analog Converter that would output various sounds corresponding to different stimuli. These stimuli would be commands received by the microcontroller via UART, and the output sounds would simulate a switch, or a closed door, or other ambient sounds from a working environment

Different programming languages have different takes on how to handle I/O. The basic way is to wrap the kernel syscalls, here's the basic open() call in assembler:

Validation is one of the most important parts in any software project. Building flexible business validation is every one’s dream. Rather than writing frameworks from scratch to do these things, Microsoft validation blocks makes it a breeze. In this article we will discuss how validation application blocks help us to build flexible validations using validation application blocks. Its just a simple sixteen step process to put our business validation in action using validation blocks.

With the days of the single cored processor drawing to a close and users demanding more robust user interfaces by the day, knowledge of multi-threaded programming techniques is quickly becoming a requirement of any competitive application developer.

Herb continues his exploration of lock-free code--this time focusing on creating a lock-free queue.

Do you like C? I do. I used to write software for embedded devices, where resources are priceless and each CPU cycle and every byte of RAM counts. I enjoyed it a lot, mostly because it was a real challenge and it reminded me of good old 8-bit computer times, when if your program was not fast enough you had to optimize its code or found a smarter solution instead of buying a better CPU, expanding memory, or building a home data center

There are several traps that even very experienced programmers fall into when they write code that depends on floating point arithmetic. This article explains five things to keep in mind when working with floating point numbers, i.e. float and double data types.

Functions often depend on particular behavioral characteristics (“features”) of code they invoke. For example, thread-safe code must invoke only thread-safe code if it is to remain thread-safe, and exception-safe code must invoke only exception-safe code. This paper describes a technique that enables the specification of arbitrary combinations of user-defined code features on a per-function basis and that detects violations of feature constraints during compilation. The technique applies to member functions (both nonvirtual and virtual), non-member functions, and function templates; operators are excluded.

Bjarne shares his perspective on everything from his favorite toy growing up, to his dream about the future of computing, to his greatest fears about how multicore technology might evolve.

I’ve been playing around with Python a bit lately for a new project. I got up to a stage where I needed image manipulation on a per-pixel level. Here’s a few different approaches I tried out, with performance results and code snippets.

As we know iterators in C++ is a good but not a perfect abstraction. Concept of foreach() (D, Python, Ruby, etc.) appears as more generic solution. At least foreach() does not require artificial iterator::end() to be defined for the collection.

I was recently privy to a conversation where a student in an introductory course on AI was being taught iterative deepening search in, of all things, Scheme. Now I don’t know enough about Scheme to fall one way or another… just as I don’t know enough about Italian to say whether or not the Verdi’s Aida is decent in its original language. (Of course, I don’t know enough Aida to tell you whether it is decent in English either.) However, in a game programming world dominated by C++, I would question the merits of teaching in anything other than C++.

Security is becoming more and more critical to developers in all types of environments—even those such as embedded systems that have until recently considered security a non-issue. In this article, I examine several types of coding vulnerabilities, pointing out what the vulnerability is, how you can mitigate the risk of exploit within your code, and how to best find these types of flaws in your code.

15th October 2008 - Maritim Hotel Stuttgart MISRA DAY 2008 Highlight will be the keynote of Dr. Scott Meyers, the well known C++ expert. The following topics will be discussed: - Presentation of the new MISRA-C++ Standard. - The current status, as well as the further development of MISRA-C - A critical sight into the area of a MISRA-conforme Programming. The MISRA DAY 2008 addresses Software-Engineers, Testers, Quality Managers and Project Managers of companies who are developing Software in C or C++ in Embedded respectively in safety-critical environments. Also the MISRA DAY addresses branches, that don’t have a prescripted Standard for programming guidelines yet, like medical, avionics, railway, etc.

The coding convention all 200 of our engineers use on a daily basis.

I was sitting down with one of our most productive software developers for his annual review, trying to carefully craft my words. You see, Tyler had produced some amazing results that year in tackling our most difficult assignments. Praising him was easy… almost too easy.

Webem is a web server that you can embed in your C++ application. It makes it easy to implement a browser GUI accessible from anywhere. Webem is based on a minimally modified version of the boost::asio web server, and uses a simple way of allowing html code to execute C++ methods.

In this section we will discuss about how IOC and DI can help us build loosely coupled software architecture. I am not sure should we call this a design pattern or more of a approach. If you search around the web you will see lot of controversy on whether IOC is a design pattern or not. From my point of view it is a design pattern as it solves a problem context.

I noticed in a story on Hacker News that many people do not understand that differences in threading implementations between different programming languages. In the single processor days, understanding the threading model that you were working with was not that important. With more than one core, it is a good thing to know. This is an overview.

In this tutorial, I'll post all of the source code used by Google Chrome to quickly and securely save your passwords.

Which is more important: time to write the program or time to run the program?