re #72, replaced the ~"string" by "string".to_str() still need to update the explanation though
re #72, replaced the ~"string" by "string".to_str()
still need to update the explanation though

gpbonillas/rust_for_rubyists,dskecse/rust_for_rubyists,steveklabnik/rust_for_rubyists,steveklabnik/rust_for_rubyists,steveklabnik/rust_for_rubyists,dskecse/rust_for_rubyists,dskecse/rust_for_rubyists,gpbonillas/rust_for_rubyists,gpbonillas/rust_for_rubyists