pub trait SelfSubvectorView<T: ?Sized>: Sized + VectorView<T> {
// Required method
fn restrict_full(self, range: Range<usize>) -> Self;
// Provided method
fn restrict<R: RangeBounds<usize>>(self, range: R) -> Self { ... }
}Expand description
Trait for VectorViews that support shrinking, i.e. transforming the
vector into a subvector of itself.
Note that you can easily get a subvector of a vector by using subvector::SubvectorView,
but this will wrap the original type. This makes subvector::SubvectorView unsuitable
for some applications, like recursive algorithms.
Note also that SelfSubvectorView::restrict() consumes the current object, thus
it is most useful for vectors that implement Clone/Copy, in particular for references
to vectors.
This is the VectorView-counterpart to SelfSubvectorFn.
§Example
fn compute_sum_recursive<V: SelfSubvectorView<i32>>(vec: V) -> i32 {
if vec.len() == 0 {
0
} else {
*vec.at(0) + compute_sum_recursive(vec.restrict(1..))
}
}
assert_eq!(10, compute_sum_recursive(SubvectorView::new([1, 2, 3, 4])));
assert_eq!(10, compute_sum_recursive(SubvectorView::new(vec![1, 2, 3, 4])));
assert_eq!(10, compute_sum_recursive(SubvectorView::new(&[1, 2, 3, 4, 5][..4])));Required Methods§
Sourcefn restrict_full(self, range: Range<usize>) -> Self
fn restrict_full(self, range: Range<usize>) -> Self
Returns a SelfSubvectorView that represents the elements within the given range
of this vector.
Provided Methods§
Sourcefn restrict<R: RangeBounds<usize>>(self, range: R) -> Self
fn restrict<R: RangeBounds<usize>>(self, range: R) -> Self
Returns a SelfSubvectorView that represents the elements within the given range
of this vector.
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.