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  Building the new AJAX mail UI part 2: Better than templates, building highly dynamic web pages


This is part 2 of a series of technical posts documenting some of the interesting work and technologies we’ve used to power the new interface (see also part 1, Instant notifications of new emails via eventsource/server-sent events). Regular users can skip these posts, but we hope technical users find them interesting. As dynamic websites constructed entirely on the client side become de rigueur, there are a number of templating languages battling it out to become the One True Way™ of ren...

   Web design,Dynamic,Ajax,UI     2012-02-21 05:32:29


  Scala feels like EJB 2, and other thoughts


At Devoxx last week I used the phrase "Scala feels like EJB 2 to me". What was on my mind?ScalaFor a number of years on this blog I've been mentioning a desire to write a post about Scala. Writing such a post is not easy, because anyone who has been paying attention to anti-Scala blog posts will know that writing one is a sure fire way of getting flamed. The Scala community is not tolerant of dissent.But ultimately, I felt that it was important for me to speak out and express my opinions. As I s...

   Scala,Module,EJB,Concurrency,Feature     2011-11-22 08:29:44


  The Reality


Everyone loves to talk about benchmarks. AMD’s Andy Parma recently wrote a blog that covers the top performance scores for the AMD Opteron™ 6200 Series processors. As marketing professionals, of course that’s what we talk about. What’s important to look at is the reality as well – what customers are actually purchasing. When you drive past car dealership, you’ll always see the fancy red sports car prominently displayed. It draws people in – it’s what the car dealers pur...

   AMD,Intel,Comparison,AMD vs Intel processor,artitecture     2011-11-15 08:33:58


  SQL Injection through HTTP Headers


During vulnerability assessment or penetration testing, identifying the input vectors of the target application is a primordial step. Sometimes, when dealing with Web application testing, verification routines related to SQL injection flaws discovery are restricted to the GET and POST variables as the unique inputs vectors ever. What about other HTTP header parameters? Aren’t they potential input vectors for SQL injection attacks? How can one test all these HTTP parameters and which vul...

   Code security,SQL injection,HTTP header     2012-04-05 11:42:04


  If You’re Busy, You’re Doing Something Wrong: The Surprisingly Relaxed Lives of Elite Achievers


The Berlin StudyIn the early 1990s, a trio of psychologists descended on the Universität der Künste, a historic arts academy in the heart of West Berlin. They came to study the violinists.As described in their subsequent publication in Psychological Review, the researchers asked the academy’s music professors to help them identify a set of stand out violin players — the students who the professors believed would go onto careers as professional performers.We’ll call this gr...

   Relax,Elite,Achievement,Work life balance     2011-11-11 02:37:03


  Ruby is beautiful (but I’m moving to Python)


The Ruby language is beautiful. And I think it deserves to break free from the Web. I think the future of Ruby is firmly stuck in Web development, though, so I’m going to invest in a new language for data analysis, at least for now. This is a look at the fantastic language I came to from Java and a look at a possible candidate. (Update: I’ve since written a followup.)Java to RubySix years ago, I added Ruby to my technical arsenal. I learned C++ and Java in high school, and I planned to ...

   Ruby,Java,Python,Comparison,Advantage,Ruby vs Python     2011-11-01 07:18:11


  Go vs C benchmark. Could Go be faster than C?


During last semester I was attending Multiprocessor Architectures course, given at Facultad de Informática where I study my Computer Science degree. As part of the assignments due to pass the course, we had to do several programs written in C to benchmark matrix multiplication by testing different techniques and technologies. First of all we had to do a secuential program in three different versions: A normal one where the result matrix is ordered by rows and the loops range the matrix by ro...

   Gp,C,Benchmark,Faster,Speed,Comparison     2012-02-08 10:09:07


  Python Performance Tips, Part 1


To read the Zen of Python, type import this in your Python interpreter. A sharp reader new to Python will notice the word “interpreter”, and realize that Python is another scripting language. “It must be slow!” No question about it: Python program does not run as fast or efficiently as compiled languages. Even Python advocates will tell you performance is the area that Python is not good for. However, YouTube has proven Python is capable of serving 40 million videos per hour. All ...

   Python,Performance,Efficiency,Tips     2012-02-14 10:50:22


  10 Object Oriented Design principles Java programmer should know


Object Oriented Design Principles are core of OOPS programming but I have seen most of Java programmer chasing design patterns like Singleton pattern , Decorator pattern or Observer pattern but not putting enough attention on Object oriented analysis and design or following these design principles. I have regularly seen Java programmers and developers of various experience level who either doesn't heard about these OOPS and SOLID design principle or simply doesn't know what benefits a particular...

   OOP design,Principle,Java     2012-03-14 13:51:38


  Prototypes and Object Orientation


David Chisnall takes a look at the two dominant paradigms in object-oriented languages (classes and prototypes) and discusses the strengths and weaknesses of each.Two terms are quite often confused when describing programming languages:class-based and object-oriented:Simula was the first class-based language. It provided classes (actually implemented using closures) as a means of encapsulating abstract data types.Smalltalk was the first object-oriented language. It provided a...

   Prototype,OOP,Differential,Comparison,Mo     2011-09-02 11:51:26