Struct Current

pub struct Current<T>(/* private fields */);

The current value of a type.

Implementations

impl<T> Current<T>

where T: Any,

pub unsafe fn new() -> Current<T>

Creates a new current object

Examples found in repository

examples/text.rs (line 10)

fn print_foo() {
    let foo = unsafe { &*Current::<Foo>::new() };
    println!("{}", foo.text);
    unsafe { &mut *Current::<Foo>::new() }.text = "world!".to_string();
}

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

Gets mutable reference to current object. Requires mutable reference to prevent access to globals in safe code, and to prevent mutable borrows of same value in scope. Is unsafe because returned reference inherits lifetime from argument.

pub unsafe fn current_unwrap(&mut self) -> &mut T

Unwraps mutable reference to current object, but with nicer error message.

Trait Implementations

impl<T> Deref for Current<T>

where T: Any,

type Target = T

The resulting type after dereferencing.

fn deref<'a>(&'a self) -> &'a T

Dereferences the value.

impl<T> DerefMut for Current<T>

where T: Any,

fn deref_mut<'a>(&'a mut self) -> &'a mut T

Mutably dereferences the value.