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  How big are PHP arrays (and values) really? (Hint: BIG!)

Upfront I want to thank Johannes and Tyrael for their help in finding some of the more hidden memory usage. In this post I want to investigate the memory usage of PHP arrays (and values in general) using the following script as an example, which creates 100000 unique integer array elements and measures the resulting memory usage: <?php $startMemory = memory_get_usage(); $array = range(1, 100000); echo memory_get_usage() - $startMemory, ' bytes'; How much would you expect it to ...

   PHP,Array,Memory occupation,Garbage collection     2011-12-16 10:06:04

  JavaScript Needs Blocks

While reading Hacker News posts about JavaScript, I often come across the misconception that Ruby’s blocks are essentially equivalent to JavaScript’s “first class functions”. Because the ability to pass functions around, especially when you can create them anonymously, is extremely powerful, the fact that both JavaScript and Ruby have a mechanism to do so makes it natural to assume equivalence. In fact, when people talk about why Ruby’s blocks are different ...

   JavaScript,Block,Style,Format,Maintainebility     2012-01-11 11:59:35

  iPhone App Development: What’s New For Developers In iOS 11

A curiosity ends with the introduction of iOS 11 on 5th of June 2017. It is the next-generation version of iOS. This update takes the best and most advanced operating system and turns it up to 11. But with iOS 11 was released to the public on 19 September 2017 and since then, there have been two distinct updates to iOS 11.02 which fixed the earpiece noise during phone calls; and the major iOS 11.1. iOS 10 was an operating system update that largely ignored the iPad, but Apple made up for it in ...

   APPLE,IOS11     2017-11-02 11:15:22

  Scala feels like EJB 2, and other thoughts

At Devoxx last week I used the phrase "Scala feels like EJB 2 to me". What was on my mind?ScalaFor a number of years on this blog I've been mentioning a desire to write a post about Scala. Writing such a post is not easy, because anyone who has been paying attention to anti-Scala blog posts will know that writing one is a sure fire way of getting flamed. The Scala community is not tolerant of dissent.But ultimately, I felt that it was important for me to speak out and express my opinions. As I s...

   Scala,Module,EJB,Concurrency,Feature     2011-11-22 08:29:44

  CSS Selector for Web Scraping

Creating a web scraper is no easy task. This is because it requires precision to identify the specific data points that we intend to collect for the end goal we are working towards.  Whether we are looking to create a marketing content database or analyze market trends, the last thing we need from our scraper is for it to return a lot of unnecessary data that will not help our cause. To avoid the inconvenience of going through huge amounts of data to get what we requested, it is crucial to ...

   CSS,WEB DESIGN,SELECTOR     2023-02-20 07:32:53

  Create namespace in JavaScript

A namespace (sometimes also called a name scope) is an abstract container or environment created to hold a logical grouping of unique identifiers or symbols (i.e., names). An identifier defined in a namespace is associated only with that namespace. The same identifier can be independently defined in multiple namespaces. That is, the meaning associated with an identifier defined in one namespace may or may not have the same meaning as the same identifier defined in another namespace. Languag...

   JavaScript,namespace,example     2012-05-10 04:57:17

  Some useful Linux commands for teamwork

A small development team in the intranet will frequently transfer codes, share files. Here are some command we use frequently to release some of our work. They are not applicable to Windows users. 1. Output program execution output through GTalk. Sometimes we may need to send the program execution result and log to teammates for debugging using IM. These outputs are very troublesome to copy and send while in command line mode. So we could have a program called gpipe.py which can put GTalk as a p...

   Linux,NFS,GTalk,HTTP     2013-01-16 04:36:33

  Android and Security

The last year has been a phenomenal one for the Android ecosystem. Device activations grew 250% year-on-year, and the total number of app downloads from Android Market topped 11 billion. As the platform continues to grow, we’re focused on bringing you the best new features and innovations - including in security.Adding a new layer to Android securityToday we’re revealing a service we’ve developed, codenamed Bouncer, which provides automated scanning of Android Market ...

   Android,Security,Android Apps,App market,Bouncer     2012-02-03 08:03:51

  Functional Programming in C++

Probably everyone reading this has heard “functional programming” put forth as something that is supposed to bring benefits to software development, or even heard it touted as a silver bullet.  However, a trip to Wikipedia for some more information can be initially off-putting, with early references to lambda calculus and formal systems.  It isn’t immediately clear what that has to do with writing better software. My pragmatic summary:  A large fraction of th...

   C++,Functional programming     2012-04-28 06:16:37

  How to Set Spring profile With Example

Technology:  Spring Profiles provides a way to isolates the parts of application configuration, it will make available only in certain environments. It is mainly useful it wants to load spring beans based on environment configuration, for example if the operating system is windows we can load some specific spring beans, if it is other than load different spring beans. One more scenario where spring profiles widely used, like for QA environment we will use some database which is hosted local...

   JAVA,PROFILE,SPRING,DEVELOPMENT,APPLICATIONS     2018-07-20 01:17:23

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