Macro protect 

macro_rules! protect {
    ($($var:ident = $value:expr;)*) => { ... };
}

Macro to create protected variables easily

Examples

use secure_vault::protect;

protect! {
    let api_key = "sk_live_123456789";
    let secret_token = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...";
}

api_key.with_secure(|key| {
    println!("Using API key: {}", key);
});