SEARCH KEYWORD -- System programming


  The magic of go:linkname

When writing Go program, there is frequent need on using time.Sleep() function to pause the logic for some time. And if jumping to the definition of this function, can see below definition: // Sleep pauses the current goroutine for at least the duration d. // A negative or zero duration causes Sleep to return immediately. func Sleep(d Duration) I's strange that there is no function body defined here. What happened? The actual definition of the function body is residing at runtime/time.go&nb...

   TRICKS,GO:LINKNAME,GOLANG     2022-04-10 08:39:00

  Asus ZenBook 3 vs MacBook: Has Apple Met Its Match?

With its upcoming ZenBook 3, Asus is the latest company to compete with Apple's superthin 12-inch MacBook. Due out later this year, the 12.5-inch laptop is even slimmer than the MacBook and one-ups Apple's offering with a faster CPU and a range of fashion colors. Though we haven't been able to test the ZenBook 3 in our labs yet, we've studied the specs and spent some hands-on time with the slim system to learn about its capabilities. So based on what we know today, which superslim not...

   ZENBOOK 3,PREMIUM LAPTOP,MODEL WITH 8GB,ASUS     2016-06-07 01:15:56

  Time-saving tips Linux users should know

As a programmer or system administrator, we have more chances of working on *nix platforms. It's tough experience when first start use *nix as we need to face a black screen without knowing what's behind it. Now, if we can have some resources to rely on, then we will find the beautify of *nix. They are fast, efficient and most importantly sexy. Below are some great tips for helping Linux users get used to Linux. This list is a bit long. So be patient. To get more information on a command mention...

   Linux,Tips     2013-09-03 22:30:48

  When and How to Use the Go Channel

Go’s concise structure and powerful native library enable us to hit the ground running easily. It is more efficient than Java or Python when implementing the same functions, especially its concurrent programming, which is very handy and widely admired due to its goroutine and channel. goroutine and channel has much to dig into, and let’s start with channel, which I used to consider narrowly as a message queue to transfer data between gorouti...

   GOLANG,CONTEXT,CHANNEL     2022-09-17 23:06:36

  Data type in MySQL

For both small free database space and large e-commerce websites, reasonable database table structure design is essential. To achieve this, it requires us to have a full understanding of commonly used data types in database system. Below we share some knowledge about data types in MySQL.1. Numeric typesThe numeric types can be classified as : integer, float and decimal type.The so-called "decimal" refers DECIMAL and NUMERIC, they are of the same type. Strictly speaking it is not a numeric type, ...

   MySQL, Data type,VARCHAR     2013-01-01 10:56:06

  PHP to get long running process progress dynamically

Frequently in web applications, we may have a request to the back end system which may trigger a long running process such as searching huge amount of data or a long running database process. Then the front end webpage may hang and wait for the process to be finished. During this process, if we can provide the user some information about the progress of the back end process, it may improve user experience. Unfortunately, in web applications, this seems not an easy task because web scripting lang...

   AJAX,PHP,progress,long process,demo     2012-06-04 07:29:37

  Generate certificate in Java -- Self signed certificate

This is the first post in this series which I will show you how to generate SSL certificate in Java programmatically. Certificates are frequently used in SSL communication which requires the authentication of server to client. This is to make the client to trust that the server is actually the one it claims. Certificates are really important on the Internet. All HTTPS communications on the Internet need the server side to present their certificates signed by trusted CAs. The basic flow of a requ...

   Java,Certificate,X509     2014-07-30 07:42:18

  12 useful Chrome commands

Many useful features of Chrome don't show up on its menus. You can access them through the chrome:// command. In this article we will introduce 12 useful chrome:// commands. 1. chrome://flags It can be used to turn on or turn off some chrome features. 2. chrome://dns This command will show the domain name list caught by the browser. 3. chrome://downloads You can access this through chrome menu as well. The shortcut is Ctrl+J 4. chrome://extensions This command equals to Menu->Tools->Ext...

   Chrome,chrome://     2013-01-25 04:38:03

  Tips to Keep in Mind When Adding Devices to WiFi

When it comes to powerful tools, it is hard to beat the Internet. We can use it to access a huge variety of news, information, entertainment, products and more. When the Internet first became a thing, people pretty much had to be sitting at their computers to use it. But now, thanks to the advent of a wireless network known as WiFi, you can connect to the Internet through your smartphones, streaming devices, laptops and more from anywhere in the house. If you are in the market for some new tech...

   ROUTER,TIPS,WIFI     2021-10-01 08:19:19

  The Risks of Prioritizing Features Over Security in China's EV Industry

In recent years, China's electric vehicle (EV) industry has seen a surge in innovation and growth. Companies like BYD, NIO, XPeng, and Xiaomi have become household names, not just in China but globally. These companies have been at the forefront of integrating cutting-edge technology into their vehicles, often promoting new features such as autonomous driving, advanced infotainment systems, and seamless connectivity. However, this rapid pace of innovation has raised concerns about whether these...

   SECURITY,CHINA,EV CAR     2024-11-20 01:14:18

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