bjoernager/rust
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std: Add cell to the std crate and make it build

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This commit is contained in:
Brian Anderson 2012-08-12 16:26:45 -07:00
parent 9169a1b26a
commit 78d19d8f1b
2 changed files with 5 additions and 4 deletions
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7
src/libstd/cell.rs
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@ -18,10 +18,10 @@ fn empty_cell<T>() -> Cell<T> {
impl<T> Cell<T> {
/// Yields the value, failing if the cell is empty.
fn take() -> T {
let value = none;
let mut value = none;
value <-> self.value;
if value.is_none() {
fail "attempt to take an empty cell";
fail ~"attempt to take an empty cell";
}
return option::unwrap(value);
}
@ -29,7 +29,7 @@ impl<T> Cell<T> {
/// Returns the value, failing if the cell is full.
fn put_back(+value: T) {
if self.value.is_none() {
fail "attempt to put a value back into a full cell";
fail ~"attempt to put a value back into a full cell";
}
self.value = some(move value);
}
@ -39,4 +39,3 @@ impl<T> Cell<T> {
self.value.is_none()
}
}