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  JShell -- The command line tool to run Java code in Java 9

Java 9 is currently a work-in-progress and is planned to be GAed in March 2017. Quite a few new features will be introduced in the new release. The coolest feature is project Jigsaw which is to modularize the Java packages so that a customized JDK can be built and shipped with only the necessary modules to fulfill their project requirement. Apart from this feature, another big new feature is project Kulla -- JShell. In simple, JShell is a command line tool which can be used to run...

   JAVA 9,JSHELL,KULLA     2016-04-01 21:46:48

  10 controversial programming opinions?

Every programmer has his/her own understanding about programming. His/her opinion may or may not be agreed by others since they may face different programming environment. Let's see ten controversial programming opinions. You may agree with these opinions or you may not agree with them or you have your own opinion. You can freely share with others by commenting below.1） The only “best practice” you should be using all the time is “Use Your Brain”.2） Programme...

   Programming,Opinion,Controversial     2012-05-12 11:02:18

  A couple of tips for beginning programmers

Whether it is football, quantum physics, a new foreign language or programming, the beginnings are problematic. What is more, no amount of advice can teach you as much as your own experience. Nevertheless, the following tips will help you avoid some mistakes, save your time and develop good programmer habits from the very beginning.Practise logical thinkingAlthough some may laugh at the stereotype of a programmer being a Maths genius, there is no use denying that learning Maths and Logics prepar...

   Programming,Tips,Beginner     2014-06-17 07:47:31

  Set up Superset on ubuntu 16.04 LTS

Apache Superset (incubating) is a modern, enterprise-ready business intelligence web application. Compared with business-focused BI tool like Tableau, superset is more technology-navy. It supports more types of visualization and able to work in distributed manner to boost the query performance. Most importantly, it is free of charge! An example dashboard: Let’s go and set it up. Create a virtualenv Assume Anaconda is installed for python management. # create a virtualenv with python 3.6 co...

   TUTORIAL,UBUNTU,SUPERSET     2019-10-19 21:34:55

  Load and execute JavaScript

When we load and execute JavaScript in a webpage, there are many points we need to care about because of its design and feature. There are two features about JavaScript execution in a browser: 1). The JavaScript codes will be executed immediately once loaded;2). When JavaScript codes are being executed, they will block the following contents (including page rendering and other resources downloading). So if there are multiple js files to be loaded, these codes will be executed sequentially. Since...

   JavaScript,async,defer,load,execute     2013-06-07 04:53:46

  How to make select in WinSock exceed the 64-socket limit

When doing cross-platform network programming, the only API available on Windows that corresponds to the epoll/kevent style reactor event model is select. However, it has a limitation: the number of sockets passed into select cannot exceed FD_SETSIZE, which is set to 64. Therefore, select in Java’s NIO on Windows also has the same limit. Many services ported to Windows that use the reactor model face this constraint, which often gives the impression that server programs on Windows hav...

   EXCEED,SELECT,JAVA,WINDOWS     2024-10-31 23:47:50

  6 Astounding Joomla Templates That Support EasyBlog

No doubt, blogging offers a fabulous platform where one can express his emotions, and share his views with others over the Internet. It can also help you leverage your business, as you can publish suitable blogs to efficiently promote your products and services. Moreover, one can also use blogs to exhibit his online portfolio and thus, benefit his business.  Today, there are several blogging platforms that offer a brilliant blogging experience. However, Joomla makes a superior choice among ...

   joomla, joomla templates, mobile template     2015-07-03 01:25:19

  Write Your Own R Packages

Introduction A set of user-defined functions (UDF) or utility functions are helpful to simplify our code and avoid repeating the same typing for daily analysis work. Previously, I saved all my R functions to a single R file. Whenever I want to use them, I can simply source the R file to import all functions. This is a simple but not perfect approach, especially when I want to check the documentation of certain functions. It was quite annoying that you can’t just type ?func&n...

   DATA SCIENCE,R PROGRAMMING,DATA ENGINEERING     2019-10-19 07:20:52

  Name resolution order in JavaScript

To understand what value a variable has in JavaScript, we need to understand some concepts such as scope and name resolution order. JavaScript has two scopes; one is program level and the other one is function level. Unlike in C,C++ or Java, JavaScript has no block level scope. So a variable defined in a if block will still be available outside. For example, the below example: var foo = 1; function bar() { if (true) { var foo = 10; } alert(foo); } bar(); The alert will display 10 since the ...

   JavaScript,Scope,Name resolution     2013-07-10 01:29:28

  1) How to Reset a Mac Computer

Why do you want to reset your Mac computer? Probably, you are thinking about selling it. Alternatively, maybe the computer has become too slow thus frustrating you most of the time. Additionally, you may simply be considering freeing up some space. Regardless of your reasons, the first thing you should realize is that resetting the machine is a demanding task. Additionally, it would be great to remember that in resetting the machine, you are basically formatting the hard drive fully while reins...

       2019-05-30 19:13:20

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