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  Networking Terminologies

Portmaps sudo apt-get install -y portmap Portmap is a part of ONC RPC (Open Network Computing Remote Procedure) collection of software for implementing remote procedure calls between Computer Programs. It is widely used by NFS (Network File System) and NIS. Portmap is a server that converts RPC program number to DARPA protocol port number. It must be used in order to make RPC calls. Network Infomation Service (NIS) sudo apt-get install -y nis NIS is a client server directory service provi...

   Linux,Network programming,Network file system     2012-02-16 06:22:30

  Carriage return and line feed

In programming and document editing, we may frequently encounter carriage return and line feed, i.e the well known CRLF.  But do you know about the history and difference of carriage return and line feed? Before computer came out, there was a type of teleprinter called Teletype Model 33. It can print 10 characters each second. But there is one problem with this, after finishing printing each line, it will take 0.2 second to move to next line, which is time of printing 2 characters. If a new...

   CR,CARRIAGE RETURN,LINE FEED,LF,NEW LINE,CRLF     2017-02-19 08:29:23

  "Programmer" is an Overgeneralization

"Beware of bugs in the above code; I have only proved it correct, not tried it." - Donald Knuth Earlier today, I came across a post during a google-fu session that claimed that no one should use the C++ standard library function make_heap, because almost nobody uses it correctly. I immediately started mentally ranting about how utterly ridiculous this claim is, because anyone whose gone to a basic algorithm class would know how to properly use make_heap. Then I started thinking about all the ...

   Programmer,Overgeneration,Overload     2012-03-13 08:13:16

  10 notorious computer virus

The history of computer virus is the same as computer history. With more and more powerful computers, virus also are smarter and harder to be detected and killed. They have big impact on data security and system usability. We introduce 10 notorious computer virus in the history. 1. Creeper In 1971, the Creeper virus, an experimental self-replicating program, is written by Bob Thomas at BBN Technologies. Creeper infected DEC PDP-10 computers running the TENEX operating sy...

   Computer virus,History,Security     2013-07-16 21:09:22

  The Obvious, the Easy, and the Possible

Much of the tension in product development and interface design comes from trying to balance the obvious, the easy, and the possible. Figuring out which things go in which bucket is critical to fully understanding how to make something useful. Shouldn’t everything be obvious? Unless you’re making a product that just does one thing – like a paperclip, for example – everything won’t be obvious. You have to make tough calls about what needs to be obvious, ...

   Software,Obvious,Easy,Possible,Requirements     2011-11-30 11:48:12

  What is an HTC File?

Question: What is an HTC File?Did you find an HTC file on your computer and wonder what program should open it? Maybe someone emailed you an HTC file but you're not sure how to use it. Perhaps you tried to open the HTC file but Windows told you that it could not open it. Before you can open an HTC file (assuming it's even a file format that's intended to be viewed or edited), you'll need to determine what kind of file the HTC file extension refers to. Answer: A file with the HTC file exte...

   HTC,HTML Component,JavaScript,Extension     2011-06-30 23:07:44

  Want to write some code? Get away from your computer!

I’ve recently realised something. The best place to write code isn’t in front of your computer, with your compiler, IDE and tools. The best place to write code is far, far away from any of these tools – somewhere where you can think properly. For a language with which you are fairly familiar, the mechanics of translating the program in your mind to a program that the compiler can compile (or the interpreter can interpret) is fairly easy – it’s coming ...

   Program,Goo dcode, Away, Use mind     2011-03-30 23:48:10

  5 million units of Galaxy Note II are sold until now

Samsung announced on its official website that the Galaxy Note II sales have exceeded 5 million units, the number of shipments reached 2 million in last 24 days.Galaxy Note II was officially released at the end of August and was on sale at the end of September, equipped with Android 4.1 Jelly Bean system, 5.5 inches HD Super AMOLED screen and a 1.6GHz quad-core Exynos processor.In the first 37 days on sale, Samsung Galaxy Note II had achieved 3 million units of sales,the sales is  three ti...

   Samsung Galaxy Note II,Sale     2012-11-26 11:19:21

  Australian software engineer got asked algorithm question when entering US

The whole world knows that security and background checks get tighten for people to enter US since Donald Trump took office. But have you ever heard about getting algorithm question asked during the immigration check interview while entering United States? Recently an Australian software engineer David Thornton had such an experience when he tried to enter US. (Image from kaytlentravels.wordpress.com) David is a software engineer from Sydney and he is a 24-year-old studied computer sci...

   NEWS,DONALD TRUMP,UNITED STATES     2017-03-04 12:07:54

  Which one cost more in development : Android vs iOS

As for which platform has more development cost, there are many different views. Using Android we no need to spend money on an expensive Mac computer, iOS test machine and $99 year fee for each developer account. While developing iOS apps does not require much testing, screen adaption, debug and script compatibility considerations. Let's see a few views shared by some developers. Nan Li, ERP/SAP/Mobile network/Japan/Apple/KKK@ifanr Because of the performance of iOS, it actually has domina...

   Android,iOS,Development cost,Comparison     2012-03-23 13:39:48

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