GIT stash takes the current state of the working directory and index and puts in on the stack for later and gives you back a clean working directory. So in case if you are in the middle of something and need to jump over to the other job, and at the same time you don’t want to lose your current edits then you can use GIT stash.
Edit true line in config.xml file from the /var/lib/jenkins/config.xml directory to change the security settings.
To enable: true
To disable: change true to false false
We need to restart Jenkins for change to apply by using the command “sudo service jenkins restart” in my terminal.
In case of Version, if Maven once downloaded the mentioned version say data-service:1.0, it will never try to download a newer 1.0 available in repository. To download the updated code, data-service version is be upgraded to 1.1.
In case of SNAPSHOT, Maven will automatically fetch the latest SNAPSHOT (data-service:1.0-SNAPSHOT) everytime app-ui team build their project.
AWS CodeDeploy
(Automated Software Deployment)
AWS CodeDeploy is a part of AWS deployment services which includes AWS Elastic Beanstalk, AWS CodePipeline, AWS CloudFormation, and AWS OpsWorks. AWS CodeDeploy combines application deployments to Amazon EC2 instances, on-premises instances or both.
An application may contain deployable content like code, web, configuration files, executables, packages, scripts and much more.
LET’S SEE THE BENEFITS OF AWS CODEDEPLOY
Automated Deployments: AWS CodeDeploy robotizes your application deployments throughout your development, test, and production environments. AWS CodeDeploy scales with your infrastructure so that you can deploy one instance or thousands at a time.
Reduces the downtime: AWS CodeDeploy helps you in maximizing your application availability by performing rolling updates across your Amazon EC2 instances and track the application according to the rules you have configured. A developer can stop and roll back the deployments if there are any errors.
Centralized Control: A developer can launch and track the status of your deployments through the AWS CodeDeploy console. You will receive a report that lists, when each application revision has to be deployed and to which Amazon EC2 instances.
Easy to adopt: AWS CodeDeploy works with any platform and with any application. You can easily reuse your set-up code. AWS CodeDeploy can also be integrated with your software release process or Continuous delivery tool chain.
THE OVERVIEW OF DEPLOYMENT
AppSpec file is a unique file to Aws CodeDeploy. It defines the deployment actions which you wanted to execute. Then a developer assorts the deployable content and the AppSpec file into an archive file, and uploads it to an Amazon S3 bucket or a GitHub repository. This archive file is called an application revision.
AWS CodeDeploy keeps a record of your deployments so that, you can get the information such as deployment status, deployment configuration and much more whenever you want.
In our previous articles, we have explained, what Swift programming is, it’s features, and also the difference between Swift and Objective-C. We know the technology is growing at a faster rate, the developments are done at an exponential rate. In this article, we are going to talk about the latest developments in Swift programming language.
We know Swift 2.2 is almost here. It cleans up a number of quirks and added some missing features. So let us talk about the major and the minor changes in Swift so that you can run straight away to it.
THE DEVELOPMENTS IN SWIFT PROGRAMMING
++ and – – are deprecated
Swift 2.2 deprecates the ++ and – – operators, which means they still work but a user gets a warning message when he uses them. Deprecation is done for the first time towards removing something entirely, in this case, both of these operators will be removed in Swift 3.0.
In the place of ++ and –, a user needs to use += 1 and -= 1.
You might wonder why two long-standing operators has been removed, when they exist in C, C#, Java, and C++. There are several reasons for this question, but let’s see the major reasons for its removal.
* Writing ++ rather than += 1 is more time saving.
* ++ doesn’t have an obvious meaning to the people who are learning Swift, whereas += at least reads as “add and assign”.
Traditional C-style loops are deprecated
Loops like below will soon be removed from Swift.
for var i = 1; i <= 10; i += 1 {
print(“\(i) green bottles”)
}
These are called C-style loops. They have been from a very long time in languages like C. Although, Swift is a C-like language, it has a number of newer and smarter alternatives to replace this traditional loops.
To replace this traditional loops a user can use any one of the many alternatives. For instance, the above-written code can also be re-written to loop over a range, like this:
var array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
for number in array {
print(“\(number) green bottles”)
Arrays and slice types now have removeFirst()
The removeLast() has been always helpful while working with arrays. Now we have the missing counterpart to remove the items from the beginning of the array. Swift 2.2 has introduced the new feature removeFirst() method. This removes the first element in an array and returns it to the user.
Renamed debug identifiers: #line, #function, and #file
Swift 2.1 earlier was using “snake case” symbols __File__, __Line__, __Column__, and __Function__, which automatically gets replaced by the compiler as the File name, Line number, Column number, and Function name when they appear.
Swift 2.1 earlier was using “snake case” symbols __File__, __Line__, __Column__, and __Function__, which automatically gets replaced by the compiler as the File name, Line number, Column number, and Function name when they appear.
VAR PARAMETERS HAVE BEEN DEPRECATED
Another deprecation in the list is, var parameters are deprecated because they offer only minimal usefulness.
func printGreeting(var name: String, repeat repeatCount: Int) {
name = name.uppercaseString
for _ in 0 ..< repeatCount {
print(name)
}
}
printGreeting(“Taylor”, repeat: 5)
Now the difference is, the name is now var name and name gets converted to uppercase so that “TAYLOR” will be printed out for five times.
Without the var keyword, the name would have been constant and the upper string line would be failed.
Mobile applications are becoming more and more important for businesses and consumers who are expecting higher quality applications for mobile devices. You have many tools to create your website as you visualize it, it also became essential that you first test your website thoroughly before sending it live on mobile. The major problem here is that you are dealing with far too many mobile devices and mobile OS and hence, testing your website on each of these devices would turn out to be very onerous and expensive. In order to make your task simpler, there are some useful tools available to help you and ensure that your mobile is absolutely mobile-friendly.
Here we bring you a list of top 3 tools for testing your website intended to go live on mobile devices:
Google Mobilizer
The constant presence of the mobile phone puts a greater demand on mobile site’s availability and performance. But, as the adoption of the mobile web increases, device propagation, conflicting standards, and limited tools make developing and delivering quality mobile experiences, a challenge for many organizations.
The “Gomez mobile readiness test” is designed to help the organizations to quickly assess their site’s mobile readiness so that they can troubleshoot and improve it.
Just by entering the URL, the Gomez mobile readiness test returns a score between one to five which indicates how well the site complies with mobile web industry standards like W3C’s MobileOK checker. It also provides analysis of the website’s page weight and detailed test report from 30 proven mobile web practices. The Gomez platform identifies business impacting issues by testing and measuring Web applications from the “outside-in” across all users, browsers, devices, and geographies using a global network of over 10,000 locations.
Worldwide 2,500 customers ranging from small to large organizations are using Gomez to increase revenue, build brand loyalty, and decrease costs.
iPhoney
Are you looking for a way to see how your web creations look in iPhone? Then don’t look further, because iPoney gives you a pixel-accurate web browsing environment powered by Safari which you can use while developing web sites for iPhone. It is the perfect 320 by 480-pixel canvas for your iPhone development. Also, it is free of cost.
iPhoney is not an iPhone simulator, but it is designed for web developers who want to create 320 by 480-pixel websites for iPhone.
There are new added features to iphoney 1.2 and it is still open source. What so new in iphoney 1.2?
* View source to see the source code for the webpage you are viewing. It is great for checking iPhone targeted pages.
* Localized for Norwegian, French, and German users.
W3C MobileOK Checker
The World Wide Web Consortium announced the availability of W3C mobileOK checker. It is a free service that performs various tests on a web page to help the developer to determine its level of mobile-friendliness.
MobileOK checker builds on the suite of quality assurance tools already offered by W3C and “it does a nice job by helping the developers to improve their content one step at a time”.
To help and ensure the best user experience across a wide variety of mobile devices, the Mobile Web Best Practices Working Group defined a set of guidelines to follow while creating the web documents.
From there, the working group determined which tests could be automated while creating the mobileOK checker.
Some of the recommendations offered by mobileOK checker includes:
* XHTML Basic 1.1 for mark-up format.
* Images should be small and it should be in the form of GIF or JPEG.
* The whitespace and comments should be removed by adding the cleaning step in the publication process.
* The page size should be under 20KB and the mark-up should be under 10KB.
* If you are using scripts, ensure that scripting support is not required.
* Do not use frames, pop-up’s or applets.
The W3C mobileOK checker is definitely a good place to make your site more mobile friendly.
In the history of computing, first in 1995, Java has come into existence, then close on its heels came JavaScript. The names made them seem like adjoined twins which are newly detached, but they are not different. One of them are compiled and statically typed and the other interpreted and dynamically typed. That is only at the beginning of the technical differences between these two fiercely distinct languages after that, it has been shifted on to a collision course of sorts, thanks to Node.js.
The Node.js was spawned, turning the developer’s heads with its speed. Not only it is faster than the JavaScript on the server but it was often faster than Java and other options. It’s small, quick, and endless requests for data have made Node.js more common, as web pages have grown more dynamic.
Node’s event-driven concurrency
Node is scalable, event-driven I/O environment built on top of Google’s V8 JavaScript engine. Google V8 complies JavaScript into the native machine code prior to execution, resulting in extremely fast runtime performance, something is not typically associated with JavaScript. As such, Node.js enables a developer to rapidly build the network apps which are lightning fast and highly concurrent.
Event-driven I/O might sound foreign to a Java developer, but it is not all that new. Rather than the multithreaded programming model which a developer was using in Java platform. Node’s approach to concurrency is single threaded, with the additional kick of an event loop. The Node construct enables non-blocking or asynchronous I/O.
Concurrency really works in Node.js. If suppose you wanted to run the previous scenario on the Java platform, then you would have the choice of complex and time-consuming approaches like from traditional threads to newer libraries in Java NIO. The Java concurrency is powerful and it is difficult to understand. By comparison, Node’s concurrency model is extremely simple, and that makes it accessible to a wider number of developers.
Node.js is ready for enterprise deployment
Node.js appeals to a wide range of the tech community because, it has a reputation for well scaling, being secure, and easy to learn. It’s not hard for a developer to pick-up Node.js and can quickly become productive with it. There are many well-known organizations like PayPal, LinkedIn, Netflix, and The New York Times using Node.js in production.
If you are building your next generation applications especially like API’s for mobile and web integration in IOT or if you are creating something very new that depends on those underlying services, then Node.js is a runtime system that could work for you very well.
Frameworks: We all know Java is all about open source frameworks. That is the main reason for its popularity. Whereas Node is much newer, many people have already done quite a bit of heavy lifting and have shared their code with the world. Below are some of the Node.js frameworks which are equivalently good for mapping the popular Java frameworks.
Web MVC: In the land of Java many people are familiar with Web MVC frameworks like Spring MVC, Struts, Wicket, and JSF. Nevertheless, a good comparable Node.js web framework is Express.js, Meteor.js, Sails.js, Derby, and SocketStream. Many of the developers go with Sails.js due to its permissive license, robust community, and flexibility. In other sense, it is even more than a web framework because it also provides most of the “web server” functionality where most of the Java developers use Tomcat, Jetty etc.
The Below is the sample code for Node.JS and Java:
Final Word
There are many number of factors to be considered when you are choosing a platform for your enterprise applications or for customers. When any presence has debated the adoption of Java or Node.js for your enterprise development platform, the decision is not that obvious or cannot be made overnight. In the end, the scalability, speed, and enterprise readiness are to be considered while choosing a platform.