Visual Studio Rust

Visual studio 2019 rust

Visual Studio Code Azure Learn how to get started with Rust - set up the environment, write a program, and use the Cargo build system. Write a simple 'Hello, world!' Use Cargo, Rust's package manager and build system. Bookmark Add to collection Prerequisites. A Windows, Mac, or Linux computer; Knowledge of how to download programs.
Visual Studio Code. Lay the foundation of knowledge you need to build fast and effective programs in Rust. In this learning path, you'll: Install the tools you need to write your first lines of Rust code. Learn basic concepts in Rust. Learn how to handle errors.
Rust Extension Pack is a collection of extensions that can help you write and test Rust applications in Visual Studio Code.
I want to build a rust-project from visual studio 2019 (windows). Here is what I have done so far: Downloaded and installed rust. Compiling via rustc from the command line is possible. Installed the Rust Add-On in Visual Studio. Set 'Toolchain to use' from 'nightly' to 'beta'. This solved an issue where I got the message that rls could not be.

Visual Studio integration for the Rust programming language (http://www.rust-lang.org/).

Getting started

If you're just getting started withRust and would like a more detailed walk-through, see ourgetting started page.

Windows considerations

On Windows, Rust additionally requires the C++ build tools for Visual Studio 2013 or later. The easiest way to acquire the build tools is by installing Microsoft Visual C++ Build Tools 2019 which provides just the Visual C++ build tools. Alternately, you can install Visual Studio 2019, Visual Studio 2017, Visual Studio 2015, or Visual Studio 2013 and during install select the “C++ tools.”

For further information about configuring Rust on Windows see the Windows-specific rustup documentation.

Toolchain management with `rustup`

Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. rustup manages these builds in a consistent way on every platform that Rust supports, enabling installation of Rust from the beta and nightly release channels as well as support for additional cross-compilation targets.

If you've installed rustup in the past, you can update your installation by running rustup update.

For more information see the rustup documentation.

Configuring the `PATH` environmentvariable

In the Rust development environment, all tools are installed to the ~/.cargo/bin%USERPROFILE%.cargobin directory, and this is where you will find the Rust toolchain, including rustc, cargo, and rustup.

Accordingly, it is customary for Rust developers to include this directory in their PATH environment variable. During installation rustup will attempt to configure the PATH. Because of differences between platforms, command shells, and bugs in rustup, the modifications to PATH may not take effect until the console is restarted, or the user is logged out, or it may not succeed at all.

If, after installation, running rustc --version in the console fails, this is the most likely reason.

Uninstall Rust

If at any point you would like to uninstall Rust, you can run rustup self uninstall. We'll miss you though!

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In the Overview of developing on Windows with Rust topic, we introduced Rust and talked about what it is and what some of its main moving parts are. In this topic, we'll set up our development environment.

We recommend that you do your Rust development on Windows. However, if you plan to locally compile and test on Linux, then developing with Rust on the Windows Subsystem for Linux (WSL) is also an option.

Install Visual Studio (recommended) or the Microsoft C++ Build Tools

On Windows, Rust requires certain C++ build tools.

You can either download the Microsoft C++ Build Tools, or (recommended) you might prefer just to install Microsoft Visual Studio.

Note

We'll be using Visual Studio Code as our integrated development environment (IDE) for Rust, and not Visual Studio. But you can still install Visual Studio without expense. A Community edition is available—it's free for students, open-source contributors, and individuals.

While installing Visual Studio, there are several Windows workloads that we recommend you select—.NET desktop development, Desktop development with C++, and Universal Windows Platform development. You might not think that you'll need all three, but it's likely enough that some dependency will arise where they're required that we feel it's just simpler to select all three.

New Rust projects default to using Git. So also add the individual component Git for Windows to the mix (use the search box to search for it by name).

Install Rust

Next, install Rust from the Rust website. The website detects that you're running Windows, and it offers you 64- and 32-bit installers of the rustup tool for Windows, as well as instructions on installing Rust to the Windows Subsystem for Linux (WSL).

Tip

Rust works very well on Windows; so there's no need for you to go the WSL route (unless you plan to locally compile and test on Linux). Since you have Windows, we recommend that you just run the rustup installer for 64-bit Windows. You'll then be all set to write apps for Windows using Rust.

When the Rust installer is finished, you'll be ready to program with Rust. You won't have a convenient IDE yet (we'll cover that in the next section—Install Visual Studio Code). And you're not yet set up to call Windows APIs. But you could launch a command prompt (the x64 Native Tools Command Prompt for VS, or any cmd.exe), and perhaps issue the command cargo --version. If you see a version number printed, then that confirms that Rust installed correctly.

If you're curious about the use of the cargo keyword above, Cargo is the name of the tool in the Rust development environment that manages and builds your projects (more properly, packages) and their dependencies.

And if you really do want to dive in to some programming at this point (even without the convenience of an IDE), then you could read the Hello, World! chapter of the The Rust Programming Language book on the Rust website.

Install Visual Studio Code

By using Visual Studio Code (VS Code) as your text editor/integrated development environment (IDE), you can take advantage of language services such as code completion, syntax highlighting, formatting, and debugging.

Visual Studio 2019 Rust

VS Code also contains a built-in terminal that enables you to issue command-line arguments (to issue commands to Cargo, for example).

First, download and install Visual Studio Code for Windows.
After you've installed VS Code, install the rust-analyzerextension. You can either install the rust-analyzer extension from the Visual Studio Marketplace, or you can open VS Code, and search for rust-analyzer in the extensions menu (Ctrl+Shift+X).
For debugging support, install the CodeLLDB extension. You can either install the CodeLLDB extension from the Visual Studio Marketplace, or you can open VS Code, and search for CodeLLDB in the extensions menu (Ctrl+Shift+X).
Note
An alternative to the CodeLLDB extension for debugging support is the Microsoft C/C++ extenson. The C/C++ extension doesn't integrate as well with the IDE as CodeLLDB does. But the C/C++ extension provides superior debugging information. So you might want to have that standing by in case you need it.
You can either install the C/C++ extension from the Visual Studio Marketplace, or you can open VS Code, and search for C/C++ in the extensions menu (Ctrl+Shift+X).
If you want to open the terminal in VS Code, select View > Terminal, or alternatively use the shortcut Ctrl+` (using the backtick character). The default terminal is PowerShell.

Hello, world! tutorial (Rust with VS Code)

Visual Studio Basics

Let's take Rust for a spin with a simple 'Hello, world!' app.

Rust Vscode Debug

First, launch a command prompt (the x64 Native Tools Command Prompt for VS, or any cmd.exe), and cd to a folder where you want to keep your Rust projects.
Then ask Cargo to create a new Rust project for you with the following command.
The argument you pass to the cargo new command is the name of the project that you want Cargo to create. Here, the project name is first_rust_project. The recommendation is that you name your Rust projects using snake case (where words are lower-case, with each space replaced by an underscore).
Cargo creates a project for you with the name that you supply. And in fact Cargo's new projects contain the source code for a very simple app that outputs a Hello, world! message, as we'll see. In addition to creating the first_rust_project project, Cargo has created a folder named first_rust_project, and has put the project's source code files in there.
So now cd into that folder, and then launch VS Code from within the context of that folder.
In VS Code's Explorer, open the src > main.rs file, which is the Rust source code file that contains your app's entry point (a function named main). Here's what it looks like.
Note
When you open the first .rs file in VS Code, you'll get a notification saying that some Rust components aren't installed, and asking whether you want to install them. Click Yes, and VS Code will install the Rust language server.
You can tell from glancing at the code in main.rs that main is a function definition, and that it prints the string 'Hello, world!'. For more details about the syntax, see Anatomy of a Rust Program on the Rust website.
Now let's try running the app under the debugger. Put a breakpoint on line 2, and click Run > Start Debugging (or press F5). There are also Debug and Run commands embedded inside the text editor.
Note
When you run an app under the debugger for the first time, you'll see a dialog box saying 'Cannot start debugging because no launch configuration has been provided'. Click OK to see a second dialog box saying 'Cargo.toml has been detected in this workspace. Would you like to generate launch configurations for its targets?'. Click Yes. Then close the launch.json file and begin debugging again.
As you can see, the debugger breaks at line 2. Press F5 to continue, and the app runs to completion. In the Terminal pane, you'll see the expected output 'Hello, world!'.