rust-lang/rust — pull request #20212 by mrhota (2014-12-24 23:15:38+00:00)
Title: Guide cargo thru functions

My clarifications around variables and bindings may be controversial (although I think they're helpful), so be sure to take a look.

These edits include changes from sections 3 through 6 (Hello, Cargo to the end of Functions).

@steveklabnik