rust-lang/rust — pull request #15519 by cburgdorf (2014-07-08 09:02:48+00:00)
Title: change String::from_str() to .to_string()

I recently learned from @huonw that `"foo".to_string()` should be preferred over String::from_str("foo");
This commit updates `tutorial.md`, `rc.rs` and `string.rs` according to the convention.

There are more files to be patched but I thought it might be fine to patch them in batches.