This indexing scheme seems a bit odd at first (unless you are familiar with Python), but it has a lot of advantages. Again this may be positive or negative, but 0 in this case means one past the end of the array. The second index specifies the element AFTER the last one to be included in the slice. Or it may be a negative number, in which case we count from the end of the array -1 is the last element, -2 is the next-to-last, and so on. It may be either an ordinary, non-negative index, in which case 0 means the first element of the array, 1 means the second element, and so on. In such cases, the first index specifies the first element in the slice.
Such a subset is called a “slice” and is involved in methods such as RemoveSlice, Slice, and Splice. Several of the methods in this module take two indexes to specify a subset off an array. So please take care of this if you have used this library in older projects you want to convert. I renamed “append” to “add” to ensure compatibility with the new naming conventions of API2. Used by console (or command-line) applications on Windows, macOS, and Linux.To API2 it probably doesn’t come as a surprise that I converted as well his library for manipulating Arrays to Xojo ‘s API version 2. EventsĪ console application differs from a desktop application in that it contains no graphical user interface and works only from the command line. In macOS, a console application runs within the Terminal application on Windows, it runs from the command line prompt, and on Linux it runs from the command line or a Terminal window. To create a console application, choose File => New Project and choose Console Application from the New Project Chooser window. This will create a new project without items for the default window and menubar.
#Xojo for loop windows
The Navigator will only have the App class, which is subclassed from ConsoleApplication instead of Application or WebApplication.īecause a console application has no windows or menus of its own, it communicates with the user is through the Print and Input commands or the StandardInputStream and StandardOutputStream classes, which provide equivalent functionality. When you create a GUI application, the program execution begins in the Open event of the Application class and halts when you call the Quit method or the user quits your application by choosing File => Quit. Xojo is the modern alternative to Microsoft Visual Basic. Your program will stay loaded in memory and running until a Quit command is received.Ī console application behaves differently from a desktop application.
#Xojo for loop plus
Xojo is a single language to build apps for Mac, Windows and Linux desktop, plus web, mobile and Raspberry Pi. Cross-compile desktop apps and use the same powerful language to develop for web and mobile too. The program execution begins in the Run event of the ConsoleApplication class and terminates when you exit the Run event or call the Quit method. In other words, the entire application executes inside of the Run event. Press Control-C for force a console app to quit. NOTE: By design, console applications do not have a main event loop. It implies that classes relying on such event loop will not work as expected, like Timers or sockets.
#Xojo for loop how to
See the DoEvents method to see how to use Timers and sockets in a console application. If you would like your application to behave in a more GUI-like way, where it continues to run until the user interacts with it, then you can do that by placing a While loop in the Run event.Ī ServiceApplication is a special type of console application that is designed to run without user intervention of any kind. Xojo doesn't support passing parameters by name, however you can still achieve the equivalent behavior. The typical type of service application is a an internet server, such as an HTTP, FTP, or WebDAV server, which is capable of running without any user logged into the machine. XOJO RUN A PROGRAM FROM PROGRAM HOW TOįirst of all, you have to understand how to use the OLEObject. You can read up on the docs, but for brevity here's a quick example you can use as a template.
You can use the n function to run an external program from your Python code. On Linux, a console application does not require GTK, GDK, or CUPS.
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