pub struct Empty;
Expand description
A dummy-element which has no size and draws nothing.
This can be used in conjunction with Choice
(to indicate that one of the options
is blank, a shorthand for an Optional(Choice)
), Repeat
(if there are
zero-or-more repetitions or if there is no joining element), or LabeledBox
(if the label should be empty).
Trait Implementations§
Auto Trait Implementations§
impl RefUnwindSafe for Empty
impl Send for Empty
impl Sync for Empty
impl Unpin for Empty
impl UnwindSafe for Empty
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more