Struct bczhc_lib::lazy::Lazy

pub struct Lazy<T, F>where
    F: FnOnce() -> T + Copy,{ /* private fields */ }

Variable lazy delegate

Examples

use bczhc_lib::lazy::Lazy;

let s = Lazy::new(|| String::from("lazy string"));
// initializing when de-referenced
assert_eq!(&*s, "lazy string")

Implementations

impl<T, F> Lazy<T, F>where F: FnOnce() -> T + Copy,

pub fn new(initializer: F) -> Self

Trait Implementations

impl<T, F> Deref for Lazy<T, F>where F: FnOnce() -> T + Copy,

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T, F> DerefMut for Lazy<T, F>where F: FnOnce() -> T + Copy,

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<T, F> Drop for Lazy<T, F>where F: FnOnce() -> T + Copy,

fn drop(&mut self)

Executes the destructor for this type.