The example on https://github.com/mozilla/rust/wiki/Meeting-weekly-2013-09-10#fate-of-const seems sensible at first, but the rule it suggests would not be safe. Allowing one closure to take &mut while another takes &const would create a data race if the two closures are executed in parallel.
task::try only takes one closure and returns a Result, so it does not have the same problem as the "motivating example". _______________________________________________ Rust-dev mailing list [email protected] https://mail.mozilla.org/listinfo/rust-dev
