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PODuplexStream across tasks and closures
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copied!<p>I'm having trouble with <a href="https://stackoverflow.com/questions/17490716/lifetimes-in-rust/17493553#17493553">lifetimes</a> and borrowed points. I've read the manual and borrowed pointer tutorial, but... I'm still stuck.</p> <p>Sketch of <code>main.rs</code></p> <pre><code>fn main() { let (db_child, repo_child):(DuplexStream<~str, ~str>, DuplexStream<~str, ~str>) = DuplexStream(); do spawn { slurp_repos(&repo_child); } } </code></pre> <p>Sketch of <code>repos.rs</code></p> <pre><code>fn slurp_repos(chan: &'static DuplexStream<~str, ~str>) { ... do request.begin |event| { ... chan.send(api_url); } } </code></pre> <p>When I compile these modules, main.rs has the following error:</p> <pre><code>main.rs:21:20: 21:31 error: borrowed value does not live long enough main.rs:21 slurp_repos(&repo_child); ^~~~~~~~~~~ note: borrowed pointer must be valid for the static lifetime... main.rs:13:10: 1:0 note: ...but borrowed value is only valid for the block at 13:10 error: aborting due to previous error </code></pre> <p>I can't quite figure out how to declare my DuplexStreams lifetime static. Or perhaps this was the wrong way to go in the function type for slurp_repos.</p> <p>If you want to see the full context:</p> <ul> <li><a href="https://github.com/ozten/learning_rust/blob/b8e9d5bad6fbc3ad8fd9150c8fa739a9aaae5530/main.rs#L13-L21" rel="nofollow noreferrer">main.rs</a></li> <li><a href="https://github.com/ozten/learning_rust/blob/b8e9d5bad6fbc3ad8fd9150c8fa739a9aaae5530/repository_metadata_slurp.rs#L93-L126" rel="nofollow noreferrer">repos.rs</a></li> </ul>

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