envkit/examples/prefixed.rs

use envkit::EnvLoader;

fn main() -> Result<(), envkit::error::EnvError> {
    unsafe {
        std::env::set_var("APP_HOST", "127.0.0.1");
        std::env::set_var("APP_PORT", "3000");
        std::env::set_var("APP_ENABLED", "yes");
    }

    let loader = EnvLoader::new();
    let app = loader.with_prefix("APP_");

    let host: String = app.get("HOST")?;
    let port: u16 = app.get_or("PORT", 8080);
    let enabled: bool = app.get_or("ENABLED", false);

    println!("host: {host}");
    println!("port: {port}");
    println!("enabled: {enabled}");

    Ok(())
}