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#41 in #setting
20KB
476 lines
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
$ cat serde_json.rs
//# serde_json = "*"
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"
Dependencies
~2.1–3MB
~48K SLoC