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For apple instal Script Debugger1/24/2024 You can also configure the behavior of the debugger in the face of exceptions in the BREAKPOINTS part of the UI. If your code throws an exception, you get a nice exception view: Note that this last feature can be quite brittle, in particular if your functions modify any global state. You can also restart code execution at any stack frame by clicking the small restart icon next to a given entry here: when you click on a different function there it will show the local variables for the selected stack frame. The call stack section allows you to look at the content of any stack frame, i.e. The watch section allows you to enter arbitrary Julia expressions that are evaluated whenever the program pauses and the result is shown: Variables viewerĬomposite variables, arrays and dictionaries have full tree drill down support in the variables viewer: You have of course full access to all local variables in this expression. You can enter any valid Julia expression that returns a Bool value here. If you click with the right mouse onto a breakpoint in the editor, you can select an option Edit breakpoint., and then you can add a condition on the breakpoint. You can also configure it to only break on specific methods by specifying a signature a la foo(::String, ::Number). Simply enter the name of the function you want to break on. If you click on the little + sign in the BREKPOINTS view, you can add a function breakpoint. There are two more options for breakpoints: function breakpoints and condition on breakpoints. You already learned how you can easily set breakpoints in the source code itself. For example, you can start debugging the println function from the REPL by entering println("Test"). The macro will run the code until a breakpoint is hit, while the macro will pause the debugger on the first line of the code. Both are very simple: they will start the debugger on the code that was passed to the macro. To start such a debug session you use two macros in the REPL: the and macro. In that situation the debugger will attach to the already running REPL. You can also start the debugger from the REPL. The launch.json functionality is described in more detail in the VS Code debugger documentation. Examples include setting a fixed Julia file as the startup file, configuring command line arguments etc. This is the most basic way to start debugging, but there are many more options that you can configure in a VS Code launch.json file. In our example we started the currently active Julia file in the debugger. The second allows you to debug code in the interactive REPL. The first you already learned in the walk through: you run a Julia file in the debugger. There are two basic ways to start the debugger. I’ll now want to highlight some other features. This concludes the very basic walk through. Lets assume you have a simple project with one Julia file open in VS Code: As such it won’t be complete, but you can get a lot more tips and ideas on how to use the debugger by reading through the debugger documentation for VS Code itself. I’ll structure this post as a walk through example, followed by descriptions of some specific features. With these caveats out of the way, here is what we do have. I do encourage you to try it out, but at this point the experience is not comparable to the smooth debugging experience that you get for other languages in VS Code. There are situations when it doesn’t really do what you want it to do. Sometimes it works great, but sometimes it doesn’t. The rest of this post will describe what debugging features we support.īefore I do that, I need to stress though that this really is at best an experimental version of the debugger. The main new feature in this release is an experimental debugger. We just released the first build from the v0.15 series of the VS Code Julia extension to the marketplace.
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