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  Hide a file in a picture

Sometimes if you want to hide some important files on your computer which you don't want others to see, how would you do that? Find a professional tool? Set password for some folders? Change the file properties to hidden? They are possible, but they may not be so convenient or so secure. Here we share with you how to hide a file in a picture. Prerequisites 1 picture for example : test.jpg 1 test file, for example : test.txt WinRAR Steps Prepare the picture test.jpg and test file test.txt Use ...

   Trick,Picture,Fil hiding,WinRAR     2012-09-13 19:36:36

  Facebook : App Center is more suitable for developers

Facebook recently announced that they will release their own app store named App Center. It will be released in a few weeks. At the same time, Facebook also released the introduction page of the App Center, it introduces to developers the process of app submission and the standards of app approval.Facebook allows developer to provide charged apps via App Center. Since it has over 900 million active users globally, so many developers are willing to develop apps on this platform. Facebook will dec...

   Facebook,App Center,Introduction     2012-05-13 01:03:56

  Redis Cluster and Common Partition Techniques in Distributed Cache

In this post, I will discuss a few common partition techniques in distributed cache. Especially, I will elaborate on my understanding on the use of Redis Cluster. Please understand that at the time of writing, the latest version of Redis is 4.0.10. Many articles on the same topic have a different idea from this post. This is mainly because, those articles are probably outdated. In particular, they may refer to the Redis Cluster implementation in Redis 3. Redis Cluster has been improved...

   REDIS,DISTRIBUTED CACHE,CLOUD COMPUTING     2019-01-17 08:10:37

  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

  Rails and Web Development - Take the First Step

Getting started with web development isn’t easy. Looking back to when I started, the first few weeks were the toughest to stick with it. For someone who is new to text editors and the terminal – the installation process can be really overwhelming. I recently went through the process of helping some of my friends get set up with Ruby on Rails and after doing it a few times, I realized it would be helpful to write a post that others looking to get started could refer to.The following...

   Web design,Rail,Ruby,Ruby on Rails     2011-10-17 11:16:51

  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

  Google releases Analytics real time API

According to Tech Crunch, Google finally released its Analytics real time API. Although this feature was launched two years ago, there was no convenient way for webmasters to adjust the data so that they can be viewed properly. Now developers can use the API to get what they want and utilize these data to do what they want to. Developers need to apply for using the API now. Once you get access to this API, then you can search your own real time data and utilize these data as you want to. For ex...

   Google Analytics,API,Real time     2013-08-02 00:05:56

  Some thoughts about Facebook native app

On Techcrunch Disrupt last month, Facebook CEO Mark Zuckerberg's remarks about their mobile app sparked a denunciation against Web App. HTML 5 seems to have become the bottleneck of poor experience of all related mobile applications. From the user perspective, Facebook native iOS App rates from the 1.5 star to four star now; since the introduction of new native app, the user usage is doubled. It's not easy to have a huge rise of user usage for such a big app like Facebook. Especially consid...

   Facebook, Native app, Analysis     2012-10-12 20:38:11

  2 million iPhone 5 sold in China in 3 days

Apple announces that since it was available in China from last Friday, iPhone 5 has been sold over 2 million units in 3 days. iPhone 5 was available for sale in China starting from 14th Dec, the price is 5288RMB and up, there are two cooperated vendors in China : China Telecom and China Unicom. They start sell iPhone 5 on their own sales channels, moreover Apple starts selling iPhone in their own Apple Store and official website. According to Tim Cook, because of the high demand of Apple product...

   iPhone 5, China, Sale     2012-12-17 12:27:59

  Traditional recursion vs Tail recursion

Recursion is a frequently adopted pattern for solving some sort of algorithm problems which need to divide and conquer a big issue and solve the smaller but the same issue first. For example, calculating fibonacci  accumulating sum and calculating factorials. In these kinds of issues, recursion is more straightforward than their loop counterpart. Furthermore, recursion may need less code and looks more concise. For example, let's calculate sum of a set of numbers starting with 0 and st...

   ALGORITHM,RECURSION,TAIL RECURSION,TRADITIONAL RECURSION     2016-09-23 23:54:09

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