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std: unbox closures used in function arguments

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This commit is contained in:
Jorge Aparicio 2014-12-30 18:05:17 -05:00
parent a17c2b60e1
commit 371f04d433
4 changed files with 7 additions and 5 deletions
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2
src/libstd/io/stdio.rs
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@ -334,7 +334,7 @@ pub fn set_stderr(stderr: Box<Writer + Send>) -> Option<Box<Writer + Send>> {
// // io1 aliases io2
// })
// })
fn with_task_stdout(f: |&mut Writer| -> IoResult<()>) {
fn with_task_stdout<F>(f: F) where F: FnOnce(&mut Writer) -> IoResult<()> {
let mut my_stdout = LOCAL_STDOUT.with(|slot| {
slot.borrow_mut().take()
}).unwrap_or_else(|| {