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Arguments that can't be safely referenced will be implicitly copied. (Warnings for expensive copies will be forthcoming.) This will allow us to get rid of most of the ampersands in function signatures. See [1]. [1] https://mail.mozilla.org/pipermail/rust-dev/2011-September/000759.html
This is a compiler and suite of associated libraries and documentation for the Rust programming language. See LICENSE.txt for terms of copyright and redistribution. See http://github.com/graydon/rust for current development page.