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  Dividing any number By 9, 90, 900 and so on

The technique for Dividing any number by 9 mentally is simply to reduce a complex division to a very simple addition. The technique can be applied from both ends i.e. from right-most digit or from left-most digit. Dividing by 9 into a mixed number from right-most digit uses the Divisibility Rules for 9: 1.     First, add all the digits together and divide by 9, keeping in mind the whole number and the remainder. 2.     Write the remainder o...

   9,90,division,algorithm     2012-03-07 05:15:06

  Sort an array with only one local variable

Array sorting algorithm question is frequently asked during technical interviews. There are lots of sort algorithms including bubble sort, selection sort, insertion sort, quick sort, merge sort etc. Usually interviewees will be asked to implement sort algorithms. But have you ever been asked to sort an array which you are allowed to define ONLY ONE local variable in your algorithm?  Bubble sort can be used to do this actually. Normally a bubble sort algorithm may need three local ...

   JAVASCRIPT,ALGORITHM,SORTING,BUBBLE SORT     2016-10-07 09:46:49

  Tricks with Direct Memory Access in Java

Java was initially designed as a safe managed environment. Nevertheless, Java HotSpot VM contains a “backdoor” that provides a number of low-level operations to manipulate memory and threads directly. This backdoor – sun.misc.Unsafe â€“ is widely used by JDK itself in packages like java.nio or java.util.concurrent. It is hard to imagine a Java developer that uses this backdoor in any regular development because this API is extremely dangerous...

   Java,Directly memory access,Tricks,JVM     2012-02-13 05:31:19

  Ensuring Go Interface Implementation: A Quick Guide

Introduction Go's simplicity and power shine in its interface system, offering a clean way to define contracts between types. However, when it comes to checking whether a struct satisfies an interface, Go's static typing philosophy means there isn't a direct runtime check. In this concise guide, we'll explore practical methods, including some lesser-known tricks, to verify whether a struct implements an interface. Method 1: Type Assertion and a Dummy Method package main import "fmt" type MyInt...

   INTERFACE,GOLANG,IMPLEMENTS     2023-11-25 21:36:01

  Skills Needed to be a Web Developer in 2011

Many web developers think they already have all the knowledge they need to continue their careers. Check out this list of the ten skills all web developers must have to succeed in 2011 and beyond, and see how you measure up.1) Speak The Basic Languages of the WebBesides the content mark-up of HTML and the style rich sheets of CSS, how are you at your JavaScript and other advanced DHTML features? HTML 5, the latest upcoming W3C standard, includes audio and video embedding, database connectivity a...

   HTML5,Web skills,PHP,.NET,Java     2011-05-12 00:47:49

  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

  Tips, Tricks and Tools You Will Need to Start Using HTML5 Today

IntroductionHTML5 has been a really hot topic in web development. With the support of most modern browsers available (Safari, chrome, firefox, IE10 and mobile devices), even though the specification has not fully completed yet, but many people have already adopted it as the main technology for all the web development projects. Online giant websites such as Google, facebook, twitter and youtube, they are all built in HTML5!For me, the most exciting features of HTML5 are the canvas and the robust ...

   HTML5,Web development,Tools,Tricks,Tips     2011-10-10 05:28:53

  What is blocking and how would you troubleshoot it?

Blocking is a common occurrence in an SQL server context, but if you are new to the world of database management you might not know what this issue entails and perhaps even fear that it is a sign of serious underlying problems. To allay your fears and clear up the mystery, here is a brief overview of blocking and the steps you can take to tackle it. Image Source: Pixabay SQL blocking explained SQL blocking according to SentryOne is an offshoot of the way that concurrent databases operate. Becau...

   SQL,DEADLOCK     2020-09-17 08:50:55

  Pair Programming Stereotypes

Over the last couple of years, I’ve done a lot of pair programming. Pair programming inside my team, at customer sites, in coding dojos and in my open source projects. Pair programming is really a great and effective experience when performed by an pair of developers knowing how to pair program. Unfortunately, you cannot just put two developers in front of a single computer and expect them to perform perfectly from the start. Pair programming has to be learned. Both developers need to...

   Code programming,Pair gramming,Sterotype     2012-02-29 05:09:14

  Round Peg, Square Hole: How to Know If a Developer is a Good Fit for Your Team

Over the last few months, we have been recruiting developers, and we’ve started to get a sense for the type of developer who is a good fit for our team.  These attributes probably apply for developers at most web startups, so I wanted to share them with you. Before I get into it, the most important thing to know is that technical skill is a threshold requirement.  The assumption is that any person who is a fit for our team will have the relevant technical experience t...

   Recruitment,Gire ,Employee,Skill     2011-07-09 09:50:54

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