#[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.