The Detroit Post
Thursday, 21 October, 2021

Rust For Visual Studio

Earl Hamilton
• Tuesday, 20 October, 2020
• 7 min read

Please note that this extension is very early in development, there may be bugs or rough edges. Install a build of Visual Studio (15.8 preview 3 or newer).

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Code completion jump to definition, peek definition, find all references, symbol search types and documentation on hover code formatting refactoring (rename, deg lob) error squiggles and apply suggestions from errors snippets build tasks This extension is built and maintained by the Rust IDEs and editors team.

Open a Rust project (File > Add Folder to Workspace...). This extension provides options in VSC ode's configuration settings.

The plugin provides tasks for building, running, and testing using the relevant cargo commands. To refresh back to the defaults, delete tasks.Jason and restart VSC ode.

Both language servers can use Cargo to get more information about Rust projects and both use custom extensively to format the code. To provide code completion it uses a separate tool called racer.

Rust syntax highlighting and basic smart indentation Go to definition Project support Compiler integration Experimental GDB debugging support This post shows how to install and use the Rust IDE plugin for Visual Studio code.


To start up the Visual Studio Code IDE, please double-click the Code.exe file. Next, we need to install a Visual Studio Code IDE extension.

Click the Extensions' icon on the left side of the IDE main window, as shown below. Next, open an existing Rust project (File>Add Folder workspace...).

Finally, Visual Studio Code IDE will prompt you to install the Rust server. Running Rust application in Visual Studio Code IDE is straight forward.

Rust is an exciting programming language and I highly recommend giving it a shot. If you’re interested in programming Rust on Windows, follow the steps below and you’ll be up and writing code in no time.

Even though you may be tempted, I strongly suggest not installing Rust through Chocolate, as it doesn’t appear to install all the required tools in the tool chain (mainly rust up). With rust up missing, you won’t be able to get the Rust Language Server (RLS) up and running in Visual Studio Code.

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When you click on the button, your browser will download the rustup-init.exe executable, which is essentially a command-line installer. Installing Rust will alter your machine’s PATH environment variable.

If you see a version number, the tool chain should be successfully installed. Note that if VS Code was running before the Rust installation completed, you’ll need to restart it for the environmental changes to take effect.

I found the Rust Extension Pack” to be a great pick on the marketplace. Not only does it bundle the Rust RLS official extension, but it includes the most popular cargo and Tom plugins available.

Enter Rust Extension Pack in the search panel. The only deficiency in the Rust Extension Pack is the lack of test integration.

Open the file and add a simple test below the main function: I thought debugging Rust in Code was going to a be a pain until I found a blog by Bryce Van Dye, entitled Debug Rust on Windows with Visual Studio Code and the MSC Debugger.” His post is awesome; read through it if you get a chance.

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If you don’t want to read the whole article and still want to take advantage of debugging Rust in Code, perform the following steps: Now, when you hit F5, VS Code will start debugging a new instance of your program.

If the crate relies on C++ code then you can debug that too. I've put together a small sample project with launch.Jason pre-configured.

Run cargo build Open.vs code/is.code-workspace Add a breakpoint Select your debug launch config Press F5 Using VS Code to debug Rust isn't perfect, but it's pretty good.

Unfortunately it can't quite debug Rust out of the box. I'm writing this guide to save future me from having to remember them.

It probably makes sense to go ahead and install the Rust extension as well. Now that your tools are installed you need to configure your VS Code launch properties.


Click Debug Add Configuration If you're on Windows then select C++ (Windows) If you're on Mac or Linux then select LLB: Custom Launch You'll have to manually change the executable name under “program”.

I've found the Rust compiler to be a little more aggressive than C++ when it comes to optimizing away “unused” variables. Sometimes I store intermediate values in variables just for the debugger.

It wasn't behaving quite like I expected, so I stepped into the debugger. Much to my surprise I was able to seamlessly step into the crate's Rust code.

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