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  Learn Emacs: Keyboard Macros

An emacs keyboard macro is just a recording of user input into emacs, which means that most anything you can do in emacs can be recorded as a macro. Read that again. Pretty powerful.Here’s how it works. To start recording, typeC-x (and input the commands in your macro. Then typeC-x )to stop recording. Then typeC-x eto apply the macro once, orC-u 0 C-x eto apply the macro until the bell rings or end of buffer is reachedKeep in mind that you must not ring the bell when defining a keyboard m...

   Emac,Macro,Code,Example     2011-11-10 10:45:47

  Run MySQL on Command Line in Windows

Sometimes if we want to run MySQL but we don't have phpMyAdmin installed. What should we do?On Windows we can run MySQL in following steps:Open Console Window->Type "mysqld -u root". This means we start the mysql server with username root. This program will handle all the communications between our console window and the actual data;After starting the server, we need to use a client to connect to the server and communicate with it. the mysql program is right for this. Next in the command cons...

   mysql,console,command line,windows,defau     2011-08-21 04:14:58

  In iOS6, no need to enter password for downloading free apps

In this coming autumn, Apple will release iOS6. User experience for downloading free apps or  upgrading apps will be largely improved. Users are no longer required to enter password again when downloading free apps or upgrading downloaded apps(free or paid). This means that users only need to enter password when downloading paid apps.In iOS5, users need to enter password when they download or upgrade apps.In iOS6, if users want to download free apps, they only need to click the "Free" butto...

   Apple,iOS6,Password,Free app     2012-07-25 10:53:16

  iOS6 will not have YouTube pre-installed

2012 maybe Apple's year of  "away from Google".Following the Google Maps, YouTube will be ruled out from iOS 6. According to 9to5Mac, iOS 6 beta 4 has removed the YouTube application that existed on iOS since the first version in 2007. Apple also confirmed that the agreement signed with Google to pre-install YouTube has expired. If you are a big fan of YouTube, don't worry, Apple doesn't completely rule out YouTube. In Safari, you can still visit YouTube, Google is also developing a new ver...

   iOS6,YouTube,Apple,Google     2012-08-07 03:42:31

  Only 4G can resolve the conflicts between China Telecom Carriers and WeChat ?

Why WeChat has made the three big Chinese telecom companies uncomfortable? Let's analyze from both technical and commercial levels. From a technical point of view, Mr. Huang, Dean of China Mobile Research Institute, described the impact of "always online service" applications like WeChat. Instead of using technical terms, we will explain in simple vivid phrases. First, mobile QQ, or WeChat, will have their own "request frequency". These requests are sent to the carrier network, to check the re...

   4G,WeChat,Telecom,China     2013-03-25 08:28:59

  Inline IF and CASE statements in MySQL

There are times where running IF statements inside a query can be useful. MySQL provides a simple way to do this through the use of IF and CASE statements. The IF statement takes three arguments; the conditional, the true value and the false value. False and true values may be static values or column values. For example: SELECT IF(score > 100, 100, score) AS score FROM exam_results this will return the value in the score column limited to a maximum value of 100. IF statements can a...

   MySQK,IF,Condition,CASE,SQL     2012-04-22 10:37:01

  6 Tips to Help You Build a Great Web Application

Web applications are a little more challenging to design than websites. Designers need to anticipate user behavior, make users’ lives easier and make the experience as visually appealing as possible. Many designers tend to do what is easier for them than think about what’s easier for the user. The following is a small list of tips that designers often overlook in the process of designing a web application.1. The Power of a Good TooltipWhen you present your web application to a...

   Web design,Mobile device,Library,Style     2011-11-25 03:02:11

  Create temp file in Bash using mktemp and trap

When working on Linux Bash, sometimes there is need to create temporary file. A common way of creating temp file on Linux is creating some file in /tmp directory. However there is security risk when creating temp file in /tmp directory. This post will show how to securely create temp file in Linux Bash. When creating file in /tmp directory, there are some security risks. This directory can be accessed by any user on the system, any user can write data into this directory as well. The files creat...

   LINUX,MKTEMP,TRAP,TEMP FILE     2019-12-30 23:28:23

  Why Google+ Doesn’t Care If You Never Come Back

Ad targeting. Google+ is designed to power ad targeting, and for that it only needs you to sign up once. This lets it combine the biographical information you initially enter such as age, gender, education, employers, and places you’ve lived with your activity on Search, Gmail, Maps and all its other products to create an accurate identity profile. And this powers targeting of more relevant ads it can charge more for. So despite comScore showing that the average Google+ user only sp...

   Google+,Ads,comScore,Identity     2012-02-29 05:04:19

  Will Microsoft use Windows 8 to replace Metro?

Since there is some dispute with a German company Metro AG on the word "Metro", it is said that Microsoft will abandon "Metro" in Windows 8. Then what will be the replacement of "Metro"? According to Zdnet, the answer may be Windows 8. Microsoft reminds Windows developers not to use "Metro" when they mention interface of Windows Phone or Windows 8 in their apps and recommends that the developers use New User Interface when they describe Windows 8 style interface design. Microsoft officially anno...

   Windows 8,Metro,name     2012-08-10 13:32:00