#![crate_name="req"] #![crate_type = "lib"] use std::cell::RefCell; use std::collections::HashMap; use std::rc::Rc; pub type header_map = HashMap>>>>; // the unused ty param is necessary so this gets monomorphized pub fn request(req: &header_map) { let data = req[&"METHOD".to_string()].clone(); let _x = data.borrow().clone()[0].clone(); }