Struct option_lock::Lazy[−][src]

pub struct Lazy<T, F = fn() -> T> { /* fields omitted */ }
Expand description

A convenient wrapper around a OnceCell<T> with an initializer.

Implementations

impl<T, F> Lazy<T, F>[src]

pub const fn new(init: F) -> Self[src]

Create a new Lazy instance

impl<T, F: FnOnce() -> T> Lazy<T, F>[src]

pub fn force(this: &Self) -> &T[src]

Ensure that the initializer has run

Trait Implementations

impl<T: Debug, F> Debug for Lazy<T, F>[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

Formats the value using the given formatter. Read more

impl<T: Default> Default for Lazy<T>[src]

fn default() -> Lazy<T>[src]

Returns the “default value” for a type. Read more

impl<T, F: FnOnce() -> T> Deref for Lazy<T, F>[src]

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T[src]

Dereferences the value.

impl<T: Display, F: FnOnce() -> T> Display for Lazy<T, F>[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

Formats the value using the given formatter. Read more

impl<T, F: Send> Sync for Lazy<T, F> where
    OnceCell<T>: Sync, [src]

Auto Trait Implementations

impl<T, F = fn() -> T> !RefUnwindSafe for Lazy<T, F>

impl<T, F> Send for Lazy<T, F> where
    F: Send,
    T: Send, 

impl<T, F> Unpin for Lazy<T, F> where
    F: Unpin,
    T: Unpin, 

impl<T, F> UnwindSafe for Lazy<T, F> where
    F: UnwindSafe,
    T: UnwindSafe, 

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T> ToString for T where
    T: Display + ?Sized, [src]

pub default fn to_string(&self) -> String[src]

Converts the given value to a String. Read more

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.