Struct ico_memory::mem::Nullable

pub struct Nullable<T: MaybeNull> { /* fields omitted */ }

Methods

impl<T: MaybeNull> Nullable<T>

pub fn new(value: T) -> Nullable<T>

pub fn null() -> Nullable<T>

pub fn is_null(&self) -> bool

pub fn get(self) -> Option<T>

pub fn get_ref(&self) -> Option<&T>

pub fn get_mut(&mut self) -> Option<&mut T>

pub fn take(&mut self) -> Nullable<T>

pub fn replace(&mut self, value: T) -> Nullable<T>

pub fn map<U: MaybeNull, F>(self, f: F) -> Nullable<U> where
    F: FnOnce(T) -> U, 

Trait Implementations

impl<T: Eq + MaybeNull> Eq for Nullable<T>

impl<T> Clone for Nullable<T> where
    T: MaybeNull + Clone, 

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: PartialOrd + MaybeNull> PartialOrd<Nullable<T>> for Nullable<T>

fn partial_cmp(&self, other: &Nullable<T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Nullable<T>) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Nullable<T>) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Nullable<T>) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Nullable<T>) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: PartialEq + MaybeNull> PartialEq<Nullable<T>> for Nullable<T>

fn eq(&self, other: &Nullable<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Nullable<T>) -> bool

This method tests for !=.

impl<T: Ord + MaybeNull> Ord for Nullable<T>

fn cmp(&self, other: &Nullable<T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl<T: Copy + MaybeNull> Copy for Nullable<T>

impl<T: Hash + MaybeNull> Hash for Nullable<T>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl<T: Debug + MaybeNull> Debug for Nullable<T>

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.