playground

playground is a tool to help you running your Rust code file without manually setting up a Cargo project.

Install

cargo install playground

Usage

Simply running playground <files> is sufficient. You can specify your external dependency at the beginning of your file with the prefix //#. It accepts the same TOML syntax as in Cargo.toml.

Example

```rust $ cat serdejson.rs //# serdejson = "*"

use serde_json::{Result, Value};

fn main() -> Result<()> { // Some JSON input data as a &str. Maybe this comes from the user. let data = r#" { "name": "John Doe", "age": 43, "phones": [ "+44 1234567", "+44 2345678" ] }"#;

// Parse the string of data into serde_json::Value.
let v: Value = serde_json::from_str(data)?;

// Access parts of the data by indexing with square brackets.
println!("Please call {} at the number {}", v["name"], v["phones"][0]);

Ok(())

}

$ playground serde_json.rs

Please call "John Doe" at the number "+44 1234567" ```