SEARCH KEYWORD -- Salary level

  About HTML semantics and front-end architecture

A collection of thoughts, experiences, ideas that I like, and ideas that I have been experimenting with over the last year. It covers HTML semantics, components and approaches to front-end architecture, class naming patterns, and HTTP compression. We shall not cease from exploration And the end of all our exploring Will be to arrive where we started And know the place for the first time. T.S. Eliot — “Little Gidding” About semantics Semantics is the study of the relationshi...

   HTML,SemanticsCSS,OO CSS     2012-03-16 08:42:55

  How Query Optimizer Works in RDBMS

In a previous post, we discussed how the various relational operators are implemented in relational database systems. If you have read that post, you probably still remember that there are a few alternative implementations for every operator. Thus, how should RDBMS determine which algorithm (or implementation) to use? Obviously, to optimize the performance for any query, RDBMS has to select the correct the algorithm based on the query. It would not be desirable to always use the same algori...

   DATABASE,DATABASE DESIGN,DATABASE OPTIMIZATION     2019-04-20 07:26:32

  Is Java Set ordered or not?

“Is Java Set ordered or not? ” is the most popular question asked when you interview for a Java Developer position. Many fail to answer it, and I have to admit I was one of the many. I have known the answer is “Yes and No” for a long time. No. HashSet is not ordered. Yes.TreeSet is ordered. If the interviewer continues with some follow up questions, I’m not confident that I know the answer then. Why is TreeSet ordered? Are there any other ordered S...

   ORDER,SORTEDSET,HASHSET,JAVA     2021-02-11 06:55:00

  Writing forward-compatible websites

This is a list of best practices for creating websites that do not break when browsers are updated. It's not always possible to follow all of these, but following as many of them as possible will help future-proof your website. This is especially important for intranet applications and other non-public websites where problems are likely to not be noticed during testing by browser vendors.JavaScriptPrefix all global variable access in onfoo attributes with “window.”When an e...

   Web design,Forward compatible,CSS,JavaScript,window     2011-11-23 08:07:35

  Stuff The Internet Says On Scalability For September 16, 2011

Between love and madness lies HighScalability:Google now 10x better: MapReduce sorts 1 petabyte of data using 8000 computers in 33 minutes; 1 Billion on Social Networks;Tumblr at 10 Billion Posts; Twitter at 100 Million Users; Testing at Google Scale: 1800 builds, 120 million test suites, 60 million tests run daily.From the Dash Memo on Google's Plan: Go is a very promising systems-programming language in the vein of C++. We fully hope and expect that Go become...

   Scalability,Go,Google,MapReduce,Muppet,M     2011-09-20 11:22:36

  Static Code Analysis

The most important thing I have done as a programmer in recent years is to aggressively pursue static code analysis.  Even more valuable than the hundreds of serious bugs I have prevented with it is the change in mindset about the way I view software reliability and code quality.It is important to say right up front that quality isn’t everything, and acknowledging it isn’t some sort of moral failing.  Value is what you are trying to produce, and quality is only one a...

   Static code,Analysis,Quality,Microsoft 360,Value     2011-12-24 06:50:18

  proftpd FTP Server setup on Ubuntu

A- The GUI way (for beginners only)For those who are new to linux and don't want to use a FTP server without GUI, or just for those who don't use often their FTP server and wish to set it quickly without a high level of security, there is a GTK GUI for proftpd.Be careful, it's less secure than configuring yourself your server.1- Install proftpd and gproftpd with synaptic or with this command :Code:sudo apt-get install proftpd gproftpd2-Play with the GUI and set up quickly your server.Beware...

   FTP Server,proftpd,Ubuntu,Setup     2011-04-27 11:23:10

  Notes on Programming in C

Introduction       Kernighan and Plauger's The Elements of Programming Style was an important and rightly influential book.  But sometimes I feel its concise rules were taken as a cookbook approach to good style instead of the succinct expression of a philosophy they were meant to be.  If the book claims that variable names should be chosen meaningfully, doesn't it then follow that variables whose names are small essays on their use are even better?  Isn't MaximumV...

   C,Notes,Tips     2011-12-09 07:55:47

  PHP: a fractal of bad design

Preface I’m cranky. I complain about a lot of things. There’s a lot in the world of technology I don’t like, and that’s really to be expected—programming is a hilariously young discipline, and none of us have the slightest clue what we’re doing. Combine with Sturgeon’s Law, and I have a lifetime’s worth of stuff to gripe about. This is not the same. PHP is not merely awkward to use, or ill-suited for what I want, or suboptimal, or...

   PHP,Design,Analysis     2012-04-11 13:46:57

  OT Railway System Development: How to Use PLC to Implement Land Based Railway Track Fixed Block Sign

Figure-00: Railway fixed block signaling system over view diagram, version v1.3 (2024) Project Design Purpose: This project aims to use Programmable Logic Controllers (PLC) with train detection sensors and train control signals to develop an automated OT system for railway track fixed block signaling control. The system will include a digital equivalent simulation to explain the logic of the track fixed block Automatic Train Control (ATC) mechanism for demonstration and training purposes. In th...

       2024-07-27 04:08:41

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