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  Manipulating JavaScript Arrays

Our first tutorial on JavaScript arrays covered the basics: creating arrays, accessing the contents of arrays, array lengths, and looping through arrays. In this tutorial, you explore arrays in more depth, and learn how to use various methods of the Array object to manipulate arrays. Extracting sections of an array with slice() You're not limited to accessing single array elements at a time. Thanks to the slice() method, you can grab a whole section of an array at once. slice() has the follow...

   JavaScript,Array,Manipulate,Join,Splice     2011-08-07 01:56:06

  How to Ace a Google Interview

Imagine a man named Jim. He's applying for a job at Google. Jim knows that the odds are stacked against him. Google receives a million job applications a year. It's estimated that only about 1 in 130 applications results in a job. By comparison, about 1 in 14 high-school students applying to Harvard gets accepted. Jim's first interviewer is late and sweaty: He's biked to work. He starts with some polite questions about Jim's work history. Jim eagerly explains his short career. The intervi...

   Google,Interview,Questions and answers,Job     2011-12-26 09:17:36

  Deep inside ARM's new Intel killer

ARM has swung a one-two punch at Intel's plans to muscle in on the smartphone and tablet space that's currently dominated by the plucky chip designers from Cambridge.At press soirées in London and San Francisco on Wednesday, ARM announced both a design for a tiny new chip, the Cortex-A7 MPCore, and a system-on-chip scheme that will marry the new A7 with the much more robust Cortex-A15 MPCore, which was announcedlast September and which should see the light of day next...

   ARM,Killer,Intel,Chipzilla,Performance     2011-10-22 12:55:23

  A Quick Look at the Services Offered by RDBMs vs. NoSQL

The world of IT has to deal with the issue of data storage. The reason for this is that there is plenty of data produced and created daily on the internet and on various business applications. In the past, RDBMs or Relational Database Management Systems were used for storage. Even though they are still used today, there are other offerings that present competition and anyone wishing to purchase data storage systems needs to make comparisons.  One such competing system is NoSQL or Not Only ...

   NOSQL,DATABASE,RDMS,DATABASE SUPPORT     2015-11-06 04:52:54

  Select top 3 values from each group in a table with SQL

Yesterday, my friend Liu Bing asked me a question about how to select top 3 values for each person in a database table using SQL. I think this question is interesting and it deserves some thoughts. Here I record down how to solve this issue. Assume we have a table which has two columns, one column contains the names of some people and the other column contains some values related to each person. One person can have more than one value. Each value has a numeric type. The question is we want to se...

   SQL,Correlated query,top 3     2013-05-23 03:21:25

  Check file readability in Java

File operation is quite platform dependent. Although Java is a cross platform programming language, the file operation in Java is also platform dependent. The obvious evidence is the file permission check. In Java, we can call canRead(), canWrite() and canExecutable() to check whether the program can read, write or execute the file specified. However, on Windows, when we call canRead() on a File object, we may get unexpected result. Actually, on Windows, when we call canRead() on a File object, ...

   Java,Files,Readable,Check     2013-12-05 06:10:15

  Understanding the "this" keyword in JavaScript

Many people get tripped up by the this keyword in JavaScript. I think the confusion comes from people reasonably expecting this to work like “this” does in Java or the way people use “self” in Python. Although this is sometimes used to similar effect, it’s nothing like “this” in Java or other languages. And while it’s a little harder to understand, its behavior isn’t magic. In fact, this follows a relatively small set of simple rules. This...

   JavaScript,this,understanding     2012-03-29 13:48:59

  Understanding Slice Behavior in Go

In Go, understanding how slices behave when passed to functions is crucial for writing efficient and bug-free code. This behavior is often a source of confusion for many developers, especially those new to the language. In this article, we'll explore the difference between passing slices by value and by reference, and how it impacts the modification of slices within functions. Introduction In Go, slices are a fundamental data structure used to work with sequences of elements. They are essentiall...

   PASS BY REFERENCE,ARRAY,SLICE,PASS BY VALUE     2024-03-10 06:43:51

  10 Ways to Be a More Productive Web Developer

We could all be more productive. There are many things we can do — some big, some small — that will enhance the way we work and improve the outcomes of our activities.Although I can’t promise that I’ll be able to help you cure all your productivity ailments, I do hope that I can provide you with a few useful, solid tips on streamlining your web development workflow and making every part of the development cycle move quickly and smoothly.Follow each one of these tips a...

   Ways,Efficiency,Web development,API,Fram     2011-09-26 11:25:29

  5 tips for developing HTML5 mobile games

Previously at Creat Studios, Vivendi Games Mobile and JAMDAT, amongst others, Scott brings eighteen years of industry experience to MocoSpace. He heads the company's internal game studio.We've all witnessed the growth of mobile and social gaming over the past two years: the two genres have continued to evolve independently, while also coming together and embracing the power of HTML5.Mobile browser-based social games have found an audience and are thriving.This new gaming category draws from the ...

   HTML5,Mobile,Game design,Tips,Mobile dev     2011-09-05 08:15:09

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