Trait ico_memory::mem::MaybeNull

pub trait MaybeNull: Sized {
    fn is_null(&self) -> bool;
    fn null() -> Self;
    fn take(&mut self) -> Self;
    fn replace(&mut self, new: Self) -> Self;
}

Required methods

fn is_null(&self) -> bool

fn null() -> Self

fn take(&mut self) -> Self

Takes the value out , leaving a null in its place.

fn replace(&mut self, new: Self) -> Self

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Implementors

impl<'a, T> MaybeNull for IndexedRef<'a, T>

fn is_null(&self) -> bool

fn null() -> IndexedRef<'a, T>

fn take(&mut self) -> IndexedRef<'a, T>

Takes the value out , leaving a null in its place.

fn replace(&mut self, new: IndexedRef<'a, T>) -> IndexedRef<'a, T>

impl<'a, T> MaybeNull for ResourceRef<'a, T>

fn is_null(&self) -> bool

fn null() -> ResourceRef<'a, T>

fn take(&mut self) -> ResourceRef<'a, T>

Takes the value out , leaving a null in its place.

fn replace(&mut self, new: ResourceRef<'a, T>) -> ResourceRef<'a, T>

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