![]() Take a moment to Google it, yep, Google it, programmers Google things all the time or search the Xojo Dev Center. You are learning a new language after all. Tip: Don’t get discouraged if you don’t know a word or concept. This book will introduce you to more of the Xojo language and walk you through writing projects complete with code snippets that will help you grasp the basic concepts behind: variables, programming structures like loops, functions and parameters, plus you’ll get your first contact with the Xojo Debugger (the Debugger allows you to find and fix bugs in your app). For day 2, I recommend that you download the Introduction to Programming with Xojo textbook (available in PDF and iBooks formats) and work along with the first 2 chapters. Whether you know other programming languages or if Xojo is your first language to learn, understanding the fundamentals of programming will give you a leg up. Doing is a great way to learn, so try to do your own simple project from scratch. Tip: After completing these, try to reproduce the projects without relying on the documentation. The tutorials focus on further familiarizing you with the main areas in Xojo like the Editors and how to layout and interact with some of the native controls. They are just a bit more in depth than the QuickStart and will likely take you less than an hour to complete. The QuickStarts will introduce you to main concepts and have you writing your first lines of code in Xojo! If you have extra time today, try the Tutorials next. Video: If you prefer to video, there are videos you can listen to as your follow the QuickStarts on Xojo’s YouTube channel. You can find resources in other languages in the International section of the Xojo Dev Center. You can do the same both for Web and iOS projects if you are interested in starting there. If you’re interested in developing Desktop apps, point your browser to the Xojo Desktop QuickStart and follow the steps to build a simple desktop application with Xojo in 30 minutes or less. I’ll show you where to start this time, so go ahead and click Start Using Xojo in the bottom left corner to get to the Project Chooser. the Xojo app) and you will be presented with a window pointing you to many of Xojo’s resources. Once downloaded, launch the Xojo IDE (Independent Development Environment, i.e. Tip: You can find the Xojo System Requirements for your operating system (OS) of choice here. So go ahead and download Xojo to get started! Everyday in the 14 Day Guide can be done without a Xojo license. ![]() ![]() Xojo is free for learning and development, you can write, run and debug your apps all without a license. Day 1: Wet your Feet!ĭownload Xojo to your platform of choice, Mac, Windows or Linux. Let me show you a learning path you can follow over 14 days that is aimed at giving you a confident and capable to start to programming. If you are going to add programming to your skillset, it’s logical to begin with a language that makes it simple to learn the basics of programming. And since that is not something unexpected, relying on the KeyNotFoundException is unnecessary.It’s always a good time to learn something new! And maybe you have some free time on your hands now? We know our screen time is up this year, so let’s put that extra screen time to good use and learn a new skill – programming. So if you do expect situations where a key may not be found then you can account for it with these methods. But you can avoid that by using either the Dictionary (to apply a default if the key is not found) or the Dictionary methods. If the key is not found you'll get a KeyNotFoundException. For example, with a Dictionary you use the Value method to fetch a value based on a key. One reason is that when testing, the Debugger is displayed for any event that is raised if you have "Break On Exceptions" enabled in the Project menu. Since exceptions are for unexpected behavior, if you are able to avoid an error by preventing the exception from occurring then it is more efficient to do so. To do this, select Project > Break On Exceptions in the menu so that it has a checkmark next to it. ![]() When an exception is encountered in your code, you can choose to have the Debugger displayed at the line causing the exception. The act of causing an exception to occur is called raising an exception.Īll exception are subclasses of the RuntimeException class. These errors will crash your application if you do not handle them in some way. Once you've found the source of errors, you want to make sure you handle them properly.Įxceptions are a type of error that occur when something unexpected happens. The debugger can help you verify that your code is working as you expect and it can help you find errors. Reporting bugs and making feature requests. ![]()
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