# Tutorials/classes

Jquery - How change content value of pseudo :before element by Javascript. How to Write a Simple Batch (BAT) File. Batch files are the computer handyman’s way of getting things done. They can automate everyday tasks, shorten the required time to do something, and translate a complex process into something anyone could operate. In this article, you’ll learn how to write a simple batch file. You’ll learn the basics of what batch files can do and how to write them yourself. I’ll also provide you with further resources for learning to write batch (BAT) files.

Open a text file, such as a Notepad or WordPad document.Add your commands, starting with @echo [off], followed by—each in a new line—title [title of your batch script], echo [first line], and pause. Save your file with the file extension .bat, for example, test.bat.To run your batch file, double click the BAT file you just created.To edit your batch file, right-click the BAT file and select Edit. Your raw file will look something like this: And here’s the corresponding command window for the example above: Step 1: Create a BAT File Add Code News Script. Mathematics of Satellite Motion. The motion of objects is governed by Newton's laws. The same simple laws that govern the motion of objects on earth also extend to the heavens to govern the motion of planets, moons, and other satellites. The mathematics that describes a satellite's motion is the same mathematics presented for circular motion in Lesson 1. In this part of Lesson 4, we will be concerned with the variety of mathematical equations that describe the motion of satellites.

Orbital Speed Equation Consider a satellite with mass Msat orbiting a central body with a mass of mass MCentral. Fnet = ( Msat • v2 ) / R This net centripetal force is the result of the gravitational force that attracts the satellite towards the central body and can be represented as Fgrav = ( G • Msat • MCentral ) / R2 Since Fgrav = Fnet, the above expressions for centripetal force and gravitational force can be set equal to each other. (Msat • v2) / R = (G • Msat • MCentral ) / R2 v2 = (G • MCentral ) / R The Acceleration Equation a = 9.53 m/s2. WebElements Periodic Table of the Elements. Protein Data Bank - RCSB PDB.

A Structural View of Biology This resource is powered by the Protein Data Bank archive-information about the 3D shapes of proteins, nucleic acids, and complex assemblies that helps students and researchers understand all aspects of biomedicine and agriculture, from protein synthesis to health and disease. As a member of the wwPDB, the RCSB PDB curates and annotates PDB data.

The RCSB PDB builds upon the data by creating tools and resources for research and education in molecular biology, structural biology, computational biology, and beyond. Use this website to access curated and integrated biological macromolecular information in the context of function, biological processes, evolution, pathways, and disease states. A Molecular View of HIV Therapy January Molecule of the Month Nuclear Pore Complex Deposition Preparation Tools Data Extraction Small Molecules Ligand Expo: Search the Chemical Component Dictionary for the IDs of released ligands Data Format Conversion 3D Structure Viewers. HackerRank | Technical Recruiting | Hiring the Best Engineers. Go Beyond an Hour. Using Project Kotlin for Android. Try Kotlin. Tech. Useful sites for web design. Everything Web Coding/Dev. A Very Quick Comparison of Popular Languages for Teaching Computer Programming. This article has been translated into Serbo-Croatian here: Thanks to Jovana Milutinovich for creating this translation.

In the CS department where I currently teach I recently got involved in a debate on which programming language should be used to teach beginners. Java and C are the most commonly used languages in the department, and for many subjects this is appropriate, but not (I believe) for absolute beginners. I believe Python is a much better choice for beginners, and to firm up my own position I performed the very brief, very unscientific test described below. The Test I wanted to look at what was involved in writing very simple programs in a (small) variety of languages. "Hello World" seemed a bit too trivial, so I decided on the relatively simple task of reading two numbers from the user, adding them together and printing out the result.

Time to write: 15 seconds. Things to explain: Line numbers Variables INPUT PRINT RUN Java. Singpath - The Most Fun Way to Practice Software. 5 Great Resources To Learn How To Code. However, more often than not, there seems to be a problem of actually finding good content online that can teach you to code. Experimenting with a language can only get you so far.

To master it, you need to have proper guidance from people who actually know what they are talking about. So where can you find expert guidance without shelling out a fortune for it? You could start with checking out the websites below: Dream In Code Just taking a look at their logo ought to tell you that the community at Dream In Code isn’t something to mess around with. You can browse their content for free, or you can sign up to become a permanent member. They have everything. They also have a video channel and links to developers’ blogs if you want to look deeper. W3Schools If what you want to master is a Web technology, you’ve got to give W3Schools a look.

You can get tutorials ranging from plain-Jane HTML, right up to AJAX and the likes. Eloquent JavaScript TryRuby A Miscellany of HTML5 Tutorials. University of cambridge courses. Free Beginners Computer Tutorials and Lessons. WatchMeCode :: ScreenCasts From Derick Bailey. 52 Weeks Of Code Forum. Jennifer Dewalt | 180 Websites. How to Host your Website on Google Drive - Tutorial. This video tutorial explains how you can easily host websites on Google Drive with one click.

You can even publish Drive website under a custom web domain using IFRAME. If you are looking for a place to quickly host your websites but don’t have access to any web server, Google Drive is a great alternative. You can use Google Drive to host basic websites or even complex JavaScript based web apps. You may upload and publish any kind of static content* on your website including HTML pages, images, CSS, icons, audio & video files including podcasts. If you are using the old Google Drive, you can easily host websites on Drive. First upload your website files to a folder inside Google Drive, set the sharing permissions of that folder as public, open the index.html file in the Google Docs viewer and then click the “Preview” link to get the URL of your website.

However if you have migrated to the new Google Drive, you’ll be disappointed to learn that Google has dropped the web hosting feature. Twitter Bootstrap navbar tutorial. <<PreviousNext>> Using Twitter Bootstrap, you may create static navbar. In this tutorial you will see how to do that. Note: An example of Navbar with Twitter Bootstrap 3 is added. You may have a live demo here and may download the zip file containing dist folder downloaded from Bootstrap's website cotaining css, js and fonts folder and navbar-example.html file. To run it form your own setup without making any changes in the paths, Keep dist folder and the example html file in the same folder.

We will take an HTML5 page with content and see how to add a top navigation bar into it. Here is the final product : And Here is the HTML5 code of the page without any content. <! <! To create the basic structure to contain the navigations, you may insert the following code right after the <body> tag into the HTML5 code shown above: Now, let's replace the <! Help us to serve you with Better content. Wish to create a dropdown menu now? Now we want to insert social buttons into the navbar. <! <! Rosetta Code - Rosetta Code.

How To Write Unmaintainable Code. Www.scala-lang.org/docu/files/ScalaByExample.pdf# Android Ported to C# – Xamarin. Oracle and Google are currently in a \$1 billion wrestling match over Google’s use of Java in Android. But Java is not the only way to build native apps on Android. In fact, it’s not even the best way: we have been offering C# to Android developers as a high-performance, low-battery consuming alternative to Java. Our platform, Mono, is an open source implementation of the .NET framework that allows developers to write their code using C# while running on top of the Java-powered operating system, and then share that same code with iOS and Windows Phone.

Unlike Sun with Java, Microsoft submitted C# and the .NET VM for standardization to ECMA and saw those standards graduated all the way to ISO strong patent commitments. The .NET framework is also covered by Microsoft’s legally binding community promise. Last July when Xamarin was getting started, we got our team together in Boston to plan the evolution of Mono on iOS and Android. We decided it was crazy enough to try. Performance What’s Next.

Online Compiler, Editor & IDE for C, C++, C#, Java, Javascript, PHP, Ruby, VB. Base. Need reasons to love Bootstrap? Look no further. By nerds, for nerds. Built at Twitter by @mdo and @fat , Bootstrap utilizes LESS CSS , is compiled via Node , and is managed through GitHub to help nerds do awesome stuff on the web. Made for everyone. Bootstrap was made to not only look and behave great in the latest desktop browsers (as well as IE7!) , but in tablet and smartphone browsers via responsive CSS as well. Digital Inspiration - Technology Blog. Agile Modeling (AM) Home Page: Effective Practices for Modeling and Documentation. Scrum Master in Under 10 Minutes (HD) by @hamids. Book. TIOBE Software: Tiobe Index.

TIOBE Index for January 2016 January Headline: Java is TIOBE's Programming Language of 2015! Java has won the TIOBE Index programming language award of the year. This is because Java has the largest increase in popularity in one year time (+5.94%). Java leaves runner ups Visual Basic.NET (+1.51%) and Python (+1.24%) far behind. At first sight, it might seem surprising that an old language like Java wins this award. Java's rise goes hand in hand with Objective-C's decline (-5.88%). So what is the outlook for 2016? The TIOBE Programming Community index is an indicator of the popularity of programming languages. The index can be used to check whether your programming skills are still up to date or to make a strategic decision about what programming language should be adopted when starting to build a new software system.

TIOBE Programming Community IndexSource: www.tiobe.com Java Python Visual Basic .NET JavaScript Assembly language Ruby Other programming languages The Next 50 Programming Languages. Unicode Fonts for Ancient Scripts. Connecting JSP To Mysql Database Lesson. My brother Ravi Tamada request one mail about his college presentation. He is planning to do web dynamic project. So i am giving small explanation about JSP (Java Server Pages) to Mysql Connection structure, Tomcat directory structure and simple database examples.

Login.html Code : User name :<input type="text" name="usr" /> password :<input type="password" name="pwd" /> <input type="submit" /> Reg.html code: Email :email" /> First name :fname" /> Last name :lname" /> User name :userid" /> password :pwd" /> Mysql Create Database Test: Mysql no doubt about it best open source database Create Table Users: login.jsp reg.jsp welcome.jsp <%@ page import ="java.sql. *" %> <%@ page import ="javax.sql. *" %> <% String user=session.getValue("userid").toString(); %> Registration is Successfull.