use envmnt; fn main() { let mut output = envmnt::load_file("./src/test/var.env"); assert!(output.is_ok()); let eval_env = |key: String, value: String| { let mut updated_key = String::from("KEY-"); updated_key.push_str(&key); let mut updated_value = String::from("VALUE-"); updated_value.push_str(&value); Some((updated_key, updated_value)) }; output = envmnt::evaluate_and_load_file("./src/test/var.env", eval_env); assert!(output.is_ok()); }