rust-lang/rust — pull request #15942 by treeman (2014-07-24 12:38:37+00:00)
Title: Document trie collections

I'm a bit unsure over the map instantiations

```
let map: TrieMap<&str> = [(1, "a"), (2, "b"), (3, "c")].iter().map(|&x| x).collect();
```

Seems a bit long and ugly, but maybe it's fine?