Guide Mac Application Development by Example: Beginners Guide

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In this macOS development tutorial for beginners, learn how to create your first “ Hello, World” app with Swift and take a tour of Xcode.
Table of contents

The other resource Apple offers is the Swift Blog , which will keep you up to date on any new software news. Have you ever heard of that little game, made a long time ago, where you try to place falling bricks of different shapes to avoid leaving gaps? We used to dump hours upon frustrating hours into that game on our old-school, brick-shaped Game Boys…. The mind is a funny thing.


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All you have to do to start building your own version of tetris is enter your email! That way they can sell it to all their partner companies send you other relevant development information most likely. Swiftris is from Bloc , which has a wealth of free-to-use tutorials for simpler game development. This site has some free-to-use material , but it tempts you with offers of much, much more if you just fork over a little hard-earned cash.

Mac Application Development by Example Beginner's Guide

For no money, you get 40 projects from Hacking With Swift , plus their Introduction to Swift content. Everything is up to date as in tutorials for swift 3 and iOS They also run a subreddit, so if you have a specific question you can fire it off in there and cross your fingers for an answer just kidding, they seem pretty responsive and should get back to you before too long. You must pay to view that content. You also miss out on their guidebook which not only has revision notes, but more exercises to practice with as well.

Xcode Tutorial for Beginners (Updated for )

If you know some Swift and you really want to make a flappy bird knock off, you can jump right to Project Crashy Planes. The choice is yours. They teach everything from creating gradient colors to developing a barcode reader. We use the CMD command to do that -. The primary purpose of CMD is to tell the container which command it should run when it is started.

With that, our Dockerfile is now ready. This is how it looks like -. Now that we have our Dockerfile , we can build our image. The docker build command does the heavy-lifting of creating a Docker image from a Dockerfile. The section below shows you the output of running the same. Before you run the command yourself don't forget the period , make sure to replace my username with yours. This username should be the same one you created when you registered on Docker hub. If you haven't done that yet, please go ahead and create an account.

The docker build command is quite simple - it takes an optional tag name with -t and a location of the directory containing the Dockerfile. If you don't have the pythononbuild image, the client will first pull the image and then create your image.

Hence, your output from running the command will look different from mine. Look carefully and you'll notice that the on-build triggers were executed correctly. If everything went well, your image should be ready! Run docker images and see if your image shows. The last step in this section is to run the image and see if it actually works replacing my username with yours. The command we just ran used port for the server inside the container and exposed this externally on port Head over to the URL with port , where your app should be live. What good is an application that can't be shared with friends, right?

So in this section we are going to see how we can deploy our awesome application to the cloud so that we can share it with our friends! We'll also see how easy it is to make our application scalable and manageable with Beanstalk! The first thing that we need to do before we deploy our app to AWS is to publish our image on a registry which can be accessed by AWS.


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  • There are many different Docker registries you can use you can even host your own. For now, let's use Docker Hub to publish the image. To publish, just type. If this is the first time you are pushing an image, the client will ask you to login. Provide the same credentials that you used for logging into Docker Hub. Remember to replace the name of the image tag above with yours.

    Once that is done, you can view your image on Docker Hub. For example, here's the web page for my image. Note: One thing that I'd like to clarify before we go ahead is that it is not imperative to host your image on a public registry or any registry in order to deploy to AWS. In case you're writing code for the next million-dollar unicorn startup you can totally skip this step.

    The reason why we're pushing our images publicly is that it makes deployment super simple by skipping a few intermediate configuration steps. Now that your image is online, anyone who has docker installed can play with your app by typing just a single command. That's why Docker is so cool! If you've used Heroku, Google App Engine etc. As a developer, you just tell EB how to run your app and it takes care of the rest - including scaling, monitoring and even updates. In April , EB added support for running single-container Docker deployments which is what we'll use to deploy our app.

    Although EB has a very intuitive CLI , it does require some setup, and to keep things simple we'll use the web UI to launch our application. To follow along, you need a functioning AWS account. If you haven't already, please go ahead and do that now - you will need to enter your credit card information.

    But don't worry, it's free and anything we do in this tutorial will also be free! While we wait, let's quickly see what the Dockerrun. This file is basically an AWS specific file that tells EB details about our application and docker configuration.

    Requirements

    The file should be pretty self-explanatory, but you can always reference the official documentation for more information. We provide the name of the image that EB should use along with a port that the container should open.


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    Hopefully by now, our instance should be ready. Head over to the EB page and you should see a green tick indicating that your app is alive and kicking. Go ahead and open the URL in your browser and you should see the application in all its glory. You have deployed your first Docker application! That might seem like a lot of steps, but with the command-line tool for EB you can almost mimic the functionality of Heroku in a few keystrokes!

    Hopefully, you agree that Docker takes away a lot of the pains of building and deploying applications in the cloud. I would encourage you to read the AWS documentation on single-container Docker environments to get an idea of what features exist. In the next and final part of the tutorial, we'll up the ante a bit and deploy an application that mimics the real-world more closely; an app with a persistent back-end storage tier.

    Let's get straight to it!

    Hello, Mac – Walkthrough

    In the last section, we saw how easy and fun it is to run applications with Docker. We started with a simple static website and then tried a Flask app. Both of which we could run locally and in the cloud with just a few commands. One thing both these apps had in common was that they were running in a single container. Those of you who have experience running services in production know that usually apps nowadays are not that simple. There's almost always a database or any other kind of persistent storage involved.