diff options
| -rw-r--r-- | src/libstd/util.rs | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/src/libstd/util.rs b/src/libstd/util.rs index 4acc1f3abff..64bdc7fe8cd 100644 --- a/src/libstd/util.rs +++ b/src/libstd/util.rs @@ -23,25 +23,6 @@ pub fn id<T>(x: T) -> T { x } #[inline] pub fn ignore<T>(_x: T) { } -/// Sets `*ptr` to `new_value`, invokes `op()`, and then restores the -/// original value of `*ptr`. -/// -/// NB: This function accepts `@mut T` and not `&mut T` to avoid -/// an obvious borrowck hazard. Typically passing in `&mut T` will -/// cause borrow check errors because it freezes whatever location -/// that `&mut T` is stored in (either statically or dynamically). -#[inline] -pub fn with<T,R>( - ptr: @mut T, - value: T, - op: &fn() -> R) -> R -{ - let prev = replace(ptr, value); - let result = op(); - *ptr = prev; - return result; -} - /** * Swap the values at two mutable locations of the same type, without * deinitialising or copying either one. |