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  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

  Translating math into code with examples in Java, Racket, Haskell and Python

Discrete mathematical structures form the foundation of computer science.These structures are so universal that most research papers in the theory of computation, programming languages and formal methods present concepts in terms of discrete mathematics rather than code.The underlying assumption is that the reader will know how to translate these structures into a faithful implementation as a working program.A lack of material explaining this translation frustrates outsiders.What deepens that fr...

   Math,Algorithms,Formula,Program,Python     2011-11-14 08:43:15

  Microsoft is transforming XBox into a PC controlled by expressions

According to the Voice of China "News Coverage" report. When Apple products are changing  the world, the original computer giant Microsoft is also quietly looking for their new foothold in the field of electronics. This time the breakthrough is from its game console Xbox.Xbox was originally a single function console, there are signs that Microsoft may be planning for the Xbox into the computer with new functions. The selling point of this new product lies in its function of communic...

   Microsoft,XBox,New PC,China     2012-04-01 06:57:04

  Java Interview Questions

Currently there are many articles online which summarize the list of Java interview questions. Some cover lots of basic questions and some cover some specific questions in specific area such as multithreading. In this post, we will not cover the really basic questions, we will cover something different. For basic question, you can read Java Interview Questions。 Basic What is primitive data type? How many primitive data types in Java? What are they? -- A primitive type is prede...

   JAVA,SECURITY,INTERVIEW,CAREER,MULTITHREADING,QUESTION,JAVA INTERVIEW,JAVA CORE     2019-01-21 07:07:08

  What’s Your Start-up’s “Bus Count”? 7 Myths of Entrepreneurship and Programming

Software development is a rapidly evolving field that got off to a very rocky start. Conventional wisdom for many years was that software engineering should be like other types of engineering: design carefully, specify precisely, and then just build it – exactly to spec. Just like building a bridge, right? The problem with this approach is that software is just that. Soft. It’s endlessly malleable. You can change software pretty much any time you want, and people do. A...

   Start-up,technical,company,tips     2011-07-04 07:44:54

  Cleansing data with Pig and storing JSON format to HBase with Pig UDF

Introduction This post will explain you the way to clean data and store JSON format to HBase. Hadoop architect experts also explain Apache Pig and its advantages in Hadoop in this post. Read more and find out how they do it. This post contains steps to do some basic clean the duplication data and convert the data to JSON format to store to HBase. Actually, we have some built-in lib to parse JSON in Pig but it is important to manipulate the JSON data in Java code before store to HBase. Apache Pig...

   JSON,HADOOP ARCHITECT,APACHE HBASE,PIG UDF     2016-06-10 01:13:41

  Never create Ruby strings longer than 23 characters

Looking at things through a microscopesometimes leads to surprising discoveries Obviously this is an utterly preposterous statement: it’s hard to think of a more ridiculous and esoteric coding requirement. I can just imagine all sorts of amusing conversations with designers and business sponsors: “No… the size of this <input> field should be 23… 24 is just too long!” Or: “We need to explain to users that their subject lines should be les...

   Ruby,Specification,String,Interpreter,Optimization,23     2012-01-05 07:58:07

  Essential skills any web developer should have

As a web developer, besides writing HTML code, there is much more to do before the site can go live. You may consider about user experience, device compatibility, security etc. To be a good web developer, you should acquire some essential skills for web development. Below we list some of them. Some of them you may be familiar with a long time ago, but definitely some of them you may not be so familiar with or even never hear about before. Interface and User Experience Be aware that browsers imp...

   Web development,User experience     2014-03-21 06:44:49

  Your Code is My Hell

It occurred to me recently that my experience as a Rails developer may be somewhat unique.I often get brought in to help preexisting Ruby/Rails projects evolve and mature in a sustainable way. As a result, the vast majority of Ruby projects I’ve worked on have been well-established by the time I arrived. In fact, offhand I can only think of one commercial greenfield Ruby project I’ve participated in. All the rest have been “legacy” from my perspective, in the ...

   Code style,Clean code,Code paradigm     2011-09-15 08:39:16

  Ajax file upload tutorial

Step 1 - AJAX file uploadAJAX file upload tutorialFirst of all I have to say that to create a pure AJAX file upload system is not possible because of security limitations of JavaScript. All of the Ajax upload systems I know use some third party tool/package or only mimics the AJAX feeling. Even so it makes file upload process a bit nicer. In the next section I will present you a solution which imitates the AJAX process, but uses a normal upload process and iFrames.The concept: Create a simp...

   Ajax,File upload,PHP,Tutorial,IFRAME     2011-04-22 13:34:33

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