gistfile1.rs

extern mod extra;

use extra::treemap::TreeMap;

fn main(){
        
        let mut map : ~TreeMap<~str, ~str> = ~TreeMap::new();
        map.swap(~"dog", ~"cat");
        let value : &~str = map.find(&~"dog").unwrap();
        println!("dog -> {:s}", *value);
        map.pop(&~"dog");
        println!("dog -> {:s}", *value);
        
}

/*

strmap.rs:11:1: 11:4 error: cannot borrow `*map` as mutable because it is also borrowed as immutable
strmap.rs:11    map.pop(&~"dog");
                ^~~
strmap.rs:9:21: 9:24 note: second borrow of `*map` occurs here
strmap.rs:9     let value : &~str = map.find(&~"dog").unwrap();
                                    ^~~
error: aborting due to previous error
task 'rustc' failed at 'explicit failure', /home/zslayton/rust/src/libsyntax/diagnostic.rs:102
task '<main>' failed at 'explicit failure', /home/zslayton/rust/src/librustc/lib.rs:393

*/