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SEARCH KEYWORD -- OOP design

  The significance of coding competition to actual work

Some friends asked this question: In secondary schools we participate in the NOI, in university we participate in ACM/ICPC, TopCoder.What's the significance of coding competition to actual work? I participated in the NOI from 1994 to 1996, ACM/ICPC from 1999 to 2000 and TopCoder in 2002 for six months. Later I paid little attention to coding competition, so I may not understand the changes in recent years and race mode . The capabilities we can get by participating the competition can be summari...

   ACM,Programming,Facebook,TopCoder     2013-02-28 20:38:23

  Signs that you're a bad programmer

1. Inability to reason about codeReasoning about code means being able to follow the execution path ("running the program in your head") while knowing what the goal of the code is.SymptomsThe presence of "voodoo code", or code that has no effect on the goal of the program but is diligently maintained anyway (such as initializing variables that are never used, calling functions that are irrelevant to the goal, producing output that is not used, etc.)Executing idempotent functions multiple times (...

   Sign,Programmer,Characteristics,Knowledge,Skill     2011-10-20 08:56:16

  Let your page be alive

With development of Internet, Web pages lie everywhere. How to design a visually attractive web product is becoming a major concern of designers, A complete webpage consists of the combination of points, lines and layers. If you want to let your page design be alive, you should put your efforts on below 4 aspects. 1. Flexible font use In a webpage, texts are the major information carrier and are what users care mostly about. It's the main element to convey messages to readers. The font size, col...

   UI design,White space,Geometric graph     2013-07-23 03:09:51

  What are some popular myths in software development?

This article is summarized from a question on Quora .The question is         What are some popular myths in software development?Here is the answer which received most votes given by a guy named Lee Semel,. Some of the most prevalent myths are:The Waterfall Method of design, the idea that it is both possible, efficient and good practice to completely specify a system before building it, and to execute the steps of a software project sequentially rather than iter...

   Software design,Myths,Waterfall model     2012-05-02 04:52:01

  What is cache penetration, cache breakdown and cache avalanche?

When designing and developing highly available system, cache is an very important consideration. It is useful to cache some frequently accessed data so that they can be accessed quickly and also cache can protect the downstream system like DB from being hit too often.  To provide better cache design in large systems, some problems may need to be considered first. In this post, we will talk about some frequently discussed cache problems and mitigation plans. Cache penetration Cache penetrati...

   SYSTEM DESIGN,CACHE PENETRATION,CACHE BREAKDOWN,CACHE AVALANCHE     2020-04-10 08:43:00

  NIO vs IO in Java

Java 1.4 provides a new API for handling IO -- NIO. This is a non-blocking and buffer oriented IO API. Below are main differences between the NIO and IO in Java. IO NIO Stream oriented Buffer oriented Blocking IO Non-blocking IO N/A Using selector Stream oriented vs Buffer oriented The main difference is that IO is stream oriented where the data is read byte by byte and the data will not be buffered normally.This means there is no pointer to move forward and backward in the stream. I...

   JAVA,IO,NIO     2016-01-10 01:40:02

  How I Develop Things and Why

I've always considered myself a bit of a software junkie. Nothing excites me more than a great piece of new software. Some of my best childhood memories are our trips to Grandma's house, where I'd have access to a computer with a dial-up connection that I'd use to obtain freeware and shareware. I'd bring 4 or 5 floppies with me and try to cram all the games, waveform editors, and utilities that I could sneaker-net home. Luckily today, excellent software written with passion oozes out of ...

   Development,Software,Why,How,Experience     2012-01-28 07:01:34

  Do You Make These 5 Database Design Mistakes?

Look, everyone makes mistakes. It’s true. But not all of us have the chance to make mistakes that end up costing millions of dollars in hardware and production support costs. Any one of the following five mistakes listed below will add additional costs to your company. It’s guaranteed. The costs could be hardware related (extra disk space, network bandwidth), which tend to add up quickly. The costs are also support related (bad performance, database re-design, report cre...

   Database design,Mistake,Advice,Data type,Compatibility     2012-01-03 11:25:13

  Usability Testing Of Your App

Testing your mobile app for usability means following the best practices in app design. It is recommended if you want to keep your users. You need focus groups to test the app during its creation and after development. This process has its own drawbacks even when it is done with the traditional methods.Apparently, you will prefer real individuals as well as a fraction of the target audience to do the app testing. These people will report any unappealing feature or missing feature in its user int...

   TOP APP DEVELOPMENT COMPANIES,APP TESTING,MOBILE APP DEVELOPMENT,MOBILE APPS     2017-12-04 04:27:21

  10 design principles of Google data center

Google's data center supports the world's largest search engine, smart phone application platform and cloud computing services. The data center is Google's core engine and competitiveness. Over the years, Google also plays the role of the founder and innovator of large-scale web service data center technology. Its data center infrastructure design is also at the forefront of the industry, including renewable energy use, low-power refrigeration, new energy utilization as well as data center room ...

   Google,Data center,Design principle     2013-03-11 19:09:25

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