args: an array of command line arguments.If this attribute is not specified, it defaults to the currently active Julia environment in the VS Code window. The Julia process will be started with this Julia project as the active project. If this attribute is not specified, it defaults to the root working folder open in VS Code. The Julia process that is started by the launch configuration will use this path as the initial working directory. If this attribute is not specified, it defaults to the currently active Julia file in the editor. This is the Julia file that will be run when this launch configuration is used. The Julia extension itself supports the following launch configuration attributes: Launch configurations also allow you to configure more complex execution scenarios where multiple Julia and non-Julia scripts are started simultaneously via compound launch configurations. Other customization options include custom working directories, command line arguments or a specific Julia environment (that is distinct from the active Julia environment in the VS Code window). In many situations it is beneficial to not run the currently active file, but instead configure one file in your workspace as the main entry point for your project that is run when you press Ctrl+F5. You can easily customize the behavior of Run: Start Without Debugging by creating a launch configuration. Note that the Julia instance that is started by this command is entirely independent from the Julia REPL that the extension also supports. The command automatically creates a new VS Code terminal for this Julia process. The VS Code command Run: Start Without Debugging (Ctrl+F5) by default starts a new Julia instance and runs the currently active Julia file. This section describes all these options, except how to run code in the debugger, which is covered in a separate part of the documentation. In other words, executing something under the context of a binding object is the same as if that code was in the same place where that binding was defined (remember the ‘anchor’ metaphor).The Julia extension provides a number of different ways to run your Julia code. # The reason is that foo was never defined outside of the method. # If you try to print foo directly you will get an error. # even though we are outside of the method # Foo is available thanks to the binding, When you create a Binding object via the binding method, you are creating an ‘anchor’ to this point in the code.Įvery variable, method & class defined at this point will be available later via this object, even if you are in a completely different scope. Where do Ruby procs & lambdas store this scope information? This happens because the proc is using the value of count from the place where the proc was defined, and that’s outside of the method definition. It would seem like 500 is the most logical conclusion, but because of the ‘closure’ effect this will print 1. What do you think this program will print? We also have a proc named my_proc, and a call_proc method which runs (via the call method) any proc or lambda that is passed in as an argument. In this example we have a local count variable, which is set to 1. P call_proc(my_proc) # What does this print? They don’t carry the actual values, but a reference to them, so if the variables change after the proc is created, the proc will always have the latest version. This concept, which is sometimes called closure, means that a proc will carry with it values like local variables and methods from the context where it was defined. When you create a Ruby proc, it captures the current execution scope with it. Ruby procs & lambdas also have another special attribute. Taking a look at this list, we can see that lambdas are a lot closer to a regular method than procs are. Procs don’t care about the correct number of arguments, while lambdas will raise an exception.Procs return from the current method, while lambdas return from the lambda itself.Ruby blocks are little anonymous functions that can be passed into methods.īlocks are enclosed in a do / end statement or between brackets.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |