---
title: "Rust Playground Demo"
description: "Interactive demo, multiple editable Rust playgrounds on one page via play.rust-lang.org."
---

> Documentation Index
> Fetch the complete documentation index at: https://blog.sheerluck.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Rust Playground Demo

import { RustPlayground } from "@/components/ui/rust-playground";

## 1. Hello, World!

```rust playground title="Hello World"
fn main() {
println!("Hello, world!");
}
```

Try editing `println!` to print your name and hit **Run**.

## 2. With variables and mutability

```rust playground title="Variables & Mutability" edition=2024 channel=stable mode=debug
fn main() {
let mut x = 5;
println!("x is {x}");
x = 6;
println!("x is now {x}");
}
```

## 3. Second example on same page — proves multiple embeds work

```rust playground title="Second Example — Loops"
fn main() {
for i in 0..5 {
    println!("i = {}", i);
}
}
```

## 4. Error handling — see compiler output

Try running, then fix the error and run again.

```rust playground title="Compilation Error Demo"
fn main() {
let x = 5;
println!("{}", x);
// Uncomment next line to see an error:
// let y: i32 = "oops";
}
```

```rust playground title="Fix Me — Error"
fn main() {
let y: i32 = "oops";
println!("{}", y);
}
```

## 5. Nightly + 2024 edition + release mode

```rust playground title="Nightly • 2024 • Release" channel=nightly edition=2024 mode=release
fn main() {
println!("Running on nightly, edition 2024, release mode");
}
```

## 6. Explicit component usage (import)

<RustPlayground
  code={`fn main() {
    let s = String::from("from component");
    println!("Hello {s}!");
}`}
  title="Via <RustPlayground> Component"
  edition="2024"
  channel="stable"
  mode="debug"
/>

## Static code stays static

This block is plain ````rust` without `playground` — it remains a highlighted, non-runnable code block:

```rust
fn main() {
    println!("This one is static — no Run button");
}
```

---

**Fence syntax:**

````md
```rust playground title="My Example" edition=2024 channel=stable mode=debug
fn main() { println!("hi"); }
```
````

For MDX you can also use the component:

```mdx
import { RustPlayground } from "@/components/ui/rust-playground";

```

Source: https://blog.sheerluck.dev/rust-playground-demo/index.mdx