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  A Month With Scala

Although I’ve played around with Scala for the few months, these efforts largely involved simple scripts and casual reading. It wasn’t until last month that the opportunity to use Scala in a large scale project finally arose and I dove right in. The project was a typical REST based web service built on top of Amazon’s Elastic Beanstalk, SimpleDB, S3 and Redis*. First off let’s talk about why I chose Scala in the first place. After spending a good deal of my las...

   Scala,Functional,OOP,Java,Iteration     2011-12-10 06:03:23

  Discovery kills distribution: why the web needs a new leader

[Apple and Google have locked application discovery and distribution within their app stores. VisionMobile's Andreas Constantinou explains how Facebook is using the web to disintermediate Apple/Google and why the web needs a new leader].The platform duopoly.In just the space of 3 years, the mobile platforms landscape has changed from an election race to an oligarchy. The network effects at the heart of the Apple and Google business models have created formidable barriers to entry. The growth in ...

   Web,Leader,New era,Google,Apple,Mobile     2011-10-18 02:53:29

  Eight C++ programming mistakes the compiler won’t catch

C++ is a complex language, full of subtle traps for the unwary. There is an almost infinite number of ways to screw things up. Fortunately, modern compilers are pretty good at detecting a large number of these cases and notifying the programmer via compile errors or warnings. Ultimately, any error that is compiler-detectable becomes a non-issue if properly handled, as it will be caught and fixed before the program leaves development. At worst, a compiler-detectable error results in los...

   C++,Compiler,Error detection     2012-04-08 09:55:20

  sorting in C++: 3 times faster than C.

If you don't know C++ well, you might be surprised how fast C++ can be sometimes. This is especially true when code involved is small, because then inlining - which is what C++ is very good at - and templating, which makes excessive inlining possible in the first place - has the most effect. The following code compares C and C++ sorting:  #include <iostream>#include <algorithm>#include <vector>#include "stop_watch.inl" // see https://...

   C++,Sorting,C,faster,efficiency     2012-03-17 12:59:45

  Microsoft is filing a new patent about transparent display

Microsoft is filing a new patent about transparent display screen, it may be used on augmented reality technologies of tablets, phones and laptops. Similar to the scenes in the movie Minority Report. Minority Report was showed in 2002, it described a world of 2054, at that time 3D technology is mature. But after 10 years of this movie, Microsoft not only invented the basis of this technology, but also make it more portable.Patent Bolt recently revealed a patent application of Microsoft about tra...

   Microsoft,Transparent display,3D,Patent     2012-05-10 05:31:16

  Something you may not know about Shell

Shell is also called command line interface, it is the interface between *nix users and computer. Shell is a program which provides service to access OS kernel services. This article is to introduce some not so well known but useful and interesting knowledge about shell. Wiki shell was born almost at the same time as Unix. The first UNIX shell was written by Ken Thompson in 1971 and its name is Thompson sh. It's older than Linux kernel. The default Shell in most *nix and MacOS is bash, bash was...

   Linux, Unix,Shell,Command     2012-11-24 07:19:47

  Leaving comments in real life

As a programmer I like to write comments because I know that some future person (often me) is going to need to know something about my code that won't be immediately obvious from reading it. Here's a recent example from my homebrew display's code:// protocol_init: Set up a newly powered-on string of lights.  The lights are arranged// in an array wired diagonally starting from the bottom left.  For ease of programming// it's better if they are given numbers which correspond to coor...

   Comment,Programming,Style,Format,Coding standard     2011-11-15 11:42:19

  Some tricks and tips for using for range in GoLang

GoLang provides two major ways to loop through elements of array, slice and map. They are for and for range. Many people find that for range is very convenient when don't care about the index of the element. In this post, some tricks and tips would be talked about regarding for range. 1. Loop and get pointer of each element Assume there is a code snippet like below which is to get the pointer of each element in an array and create a new array with the corresponding pointer. arr := [2]int{1, 2} r...

   POINTER,FOR LOOP,GOLANG,FOR RANGE     2020-03-08 01:07:00

  The Hungry Programmer

Programming is a lot like eating. Tonight I was hungry. I wasn't at home. I couldn't go to the kitchen for a snack. I looked around and saw only McDonald's across the street. Then I was struck with the same dilemma that I face whenever I leave the comfort of my own home for any decent spread of time: Do I eat crappy food now and satisfy that hunger? Or do I stay hungry for a little longer and eat a healthy meal back at home? As I pondered this dilemma I couldn't help but notice how much i...

   Programmer,Hungry,Coder,Coding     2012-01-19 11:04:30

  Some useful code editors for developers

A good code editor will save developers much work. It can help developers find syntax errors easily through code highlight capability. It also makes the code more readable and maintainable through the indentation. Here we recommend some excellent code editors which you may want to have a try. Compilr Compilr is an online IDE, it supports 8 languages as of now including : C, C++,C#,Java,JavaScript,PHP ,Python,Ruby and Visual Basic. Compilr is developed by Ninjia Otter Inc in Canada. CodeMirrow C...

   Code editor,Code highlight     2013-03-20 12:25:13

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