SEARCH KEYWORD -- System programming


  Comparable and comparator in Java

Comparable and comparator are two similar interfaces used to compare objects in Java. When we want to sort a list of objects such as Employee or User etc, we may need to implement these interfaces to make them comparable as we want. However, there are some differences between comparable and comparator interface.ComparableA comparable object is capable of comparing itself with another object. The class itself must implements the java.lang.Comparable interface in order to be able to compare its in...

   Java,Comparable,Comparator,Sort     2012-07-04 12:06:15

  Use progressive JPEG to improve user experience

JPEG image files can have two different save types : Baseline JPEG and Progressive JPEG. Both of them have the same extension name but with different display effect. Baseline JPEG This type of JPEG files are scanned from top to bottom consecutively, each line of the image data will be saved sequentially. When opening this kind of images, data will be displayed with the save order line by line until all the data are read. If the image size is very large or network speed is very slow, the image wi...

   USER EXPERIENCE,PROGRESSIVE JPEG,BASELINE JPEG     2013-07-25 08:11:50

  Using MySQL Connector/C++ with Visual Studio 2010

MySQL Connector/C++ is one of the latest connectors for MySQL, developed by Sun Microsystems. The MySQL connector for C++ provides an object-oriented application programming interface (API) and a database driver for connecting C++ applications to the MySQL Server.When we want to build a database application with C++ using Visual Studio 2010, we may use the MySQL Connector/C++, but sometimes we may encounter different errors, either compile or runtime error. After tried many times, I finally made...

   MySQL Connector,C++,Visual Studio 2010,VS2010     2012-06-01 13:52:20

  Products born for Cloud

Cloud computing has become increasingly popularity among companies. It greatly saves the investment of infrastructure and training with everything is running on cloud, it also improves the accessibility and flexibility of service provided by companies. With its popularity, many products are born or becoming popular to help build and move the apps to the cloud. Some well known names of these products are Vagrant, Docker/LXC, Chef and OpenStack. These tools can help create, test and deploy applica...

   Cloud,Openstack,Docker,Vargrant,LXC,Chef     2015-01-25 02:27:11

  Python basics summary

Python is recommended by many people as the first language to be learned now. Even in some universities, it is the primary language to be taught to CS/CE students. To master this languages, we should understand some basics of it. Here we summarize some basics about this language. These basics include : string replacement with regular expression, traverse a directory, sort a list, remove duplication, dictionary ordering, dictionary, list, string conversion, date object manipulation, command line ...

   Python,Summary     2013-09-23 10:04:42

  The Problem with Random Numbers

Today, let's talk about how to generate true random numbers. This is an extremely difficult problem, but it involves some very interesting content. First of all, the random numbers provided by programming languages are pseudo-random numbers.  The V8 engine’s official website has an article that particularly reminds everyone of this point. The built-in random numbers are not true random numbers but pseudo-random numbers. Math.random() returns a Number value with po...

   RANDOM NUMBER,TRUE RANDOM,PSEUDO RANDOM,HISTORY     2024-06-21 21:09:14

  Maintain multiple versions of Go in one single environment

In a development environment, there might be multiple projects going on at the same time and they may require different development environments with different versions of build tool. In many programming languages, it is possible to have multiple versions of different build tool or development tool on a single environment. For example, there can be multiple JDKs, multiple versions of Ruby using RVM. For GoLang, there is a similar tool called GVM which can also be used to maintain multiple versio...

   GOLANG,GVM,GVM PKGSET,RVM     2019-11-10 00:43:47

  Speech recognition breakthrough from Microsoft

Recently, Microsoft Research published a demo video on YouTube that demonstrated simultaneously translating English speech to Chinese speech with Microsoft's new research achievement. The result is quite impressive, it has large improvement compared to previous speech recognition systems. It's a big breakthrough of speech recognition. In this demo, Microsoft Chief Research Officer Rick Rashid demonstrates a speech recognition breakthrough.First when he speaks, the screen will display what he is ...

   Speech recognition, Text to speech,Machine translation     2012-11-09 23:53:21

  The Internet : from 1969-1974

Internet was born 43 years ago. There are some big events in the history of Internet development. In my opinion, most of the big events happened at the first five years, i.e, from 1969-1974.  1969 : ARPANETThe Advanced Research Projects Agency Network (ARPANET), was the world's first operational packet switching network and the core network of a set that came to compose the global Internet. The first ARPANET transmission was between Stanford Research Institute and UCLA on 29th, October 1969...

   Internet,History     2012-06-22 09:55:51

  Want to Expand Your Customer Base Globally? A Global Phone Number Is Your First Step

If you want your establishment to connect to the world, you’re in luck. Thanks to technology development, it’s much easier to do this now more than ever. But with this global expansion, you should have a few assets to help you with your success. To maintain your business reachability no matter where your customer is, you can start with a global phone number provided by companies like Telnum. If you’re not sure if it’s the right move, we’ll help you decide whether i...

   VOIP,BUSINESS     2024-01-04 05:28:19

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