Struct std::rc::RcStable
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pub struct Rc<T> {
// some fields omitted
}A reference-counted pointer type over an immutable value.
See the module level documentation for more details.
Methods
impl<T> Rc<T>
fn new(value: T) -> Rc<T>
Constructs a new Rc<T>.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); }use std::rc::Rc; let five = Rc::new(5);
fn downgrade(&self) -> Weak<T>
Downgrades the Rc<T> to a Weak<T> reference.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); let weak_five = five.downgrade(); }use std::rc::Rc; let five = Rc::new(5); let weak_five = five.downgrade();
impl<T> Rc<T> where T: Clone
fn make_unique(&mut self) -> &mut T
Make a mutable reference from the given Rc<T>.
This is also referred to as a copy-on-write operation because the inner data is cloned if the reference count is greater than one.
Examples
fn main() { use std::rc::Rc; let mut five = Rc::new(5); let mut_five = five.make_unique(); }use std::rc::Rc; let mut five = Rc::new(5); let mut_five = five.make_unique();
Trait Implementations
impl<T> !Send for Rc<T>
impl<T> !Sync for Rc<T>
impl<T> Deref for Rc<T>
type Target = T
fn deref(&self) -> &T
impl<T> Drop for Rc<T>
fn drop(&mut self)
Drops the Rc<T>.
This will decrement the strong reference count. If the strong reference count becomes zero
and the only other references are Weak<T> ones, drops the inner value.
Examples
fn main() { use std::rc::Rc; { let five = Rc::new(5); // stuff drop(five); // explicit drop } { let five = Rc::new(5); // stuff } // implicit drop }use std::rc::Rc; { let five = Rc::new(5); // stuff drop(five); // explicit drop } { let five = Rc::new(5); // stuff } // implicit drop
impl<T> Clone for Rc<T>
fn clone(&self) -> Rc<T>
Makes a clone of the Rc<T>.
This increases the strong reference count.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); five.clone(); }use std::rc::Rc; let five = Rc::new(5); five.clone();
fn clone_from(&mut self, &Rc<T>)
impl<T> Default for Rc<T> where T: Default
fn default() -> Rc<T>
Creates a new Rc<T>, with the Default value for T.
Examples
fn main() { use std::rc::Rc; use std::default::Default; let x: Rc<i32> = Default::default(); }use std::rc::Rc; use std::default::Default; let x: Rc<i32> = Default::default();
impl<T> PartialEq<Rc<T>> for Rc<T> where T: PartialEq<T>
fn eq(&self, other: &Rc<T>) -> bool
Equality for two Rc<T>s.
Two Rc<T>s are equal if their inner value are equal.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); five == Rc::new(5); }use std::rc::Rc; let five = Rc::new(5); five == Rc::new(5);
fn ne(&self, other: &Rc<T>) -> bool
Inequality for two Rc<T>s.
Two Rc<T>s are unequal if their inner value are unequal.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); five != Rc::new(5); }use std::rc::Rc; let five = Rc::new(5); five != Rc::new(5);
fn ne(&self, &Rc<T>) -> bool
impl<T> Eq for Rc<T> where T: Eq
fn assert_receiver_is_total_eq(&self)
impl<T> PartialOrd<Rc<T>> for Rc<T> where T: PartialOrd<T>
fn partial_cmp(&self, other: &Rc<T>) -> Option<Ordering>
Partial comparison for two Rc<T>s.
The two are compared by calling partial_cmp() on their inner values.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); five.partial_cmp(&Rc::new(5)); }use std::rc::Rc; let five = Rc::new(5); five.partial_cmp(&Rc::new(5));
fn lt(&self, other: &Rc<T>) -> bool
Less-than comparison for two Rc<T>s.
The two are compared by calling < on their inner values.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); five < Rc::new(5); }use std::rc::Rc; let five = Rc::new(5); five < Rc::new(5);
fn le(&self, other: &Rc<T>) -> bool
'Less-than or equal to' comparison for two Rc<T>s.
The two are compared by calling <= on their inner values.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); five <= Rc::new(5); }use std::rc::Rc; let five = Rc::new(5); five <= Rc::new(5);
fn gt(&self, other: &Rc<T>) -> bool
Greater-than comparison for two Rc<T>s.
The two are compared by calling > on their inner values.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); five > Rc::new(5); }use std::rc::Rc; let five = Rc::new(5); five > Rc::new(5);
fn ge(&self, other: &Rc<T>) -> bool
'Greater-than or equal to' comparison for two Rc<T>s.
The two are compared by calling >= on their inner values.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); five >= Rc::new(5); }use std::rc::Rc; let five = Rc::new(5); five >= Rc::new(5);
fn lt(&self, &Rc<T>) -> bool
fn le(&self, &Rc<T>) -> bool
fn gt(&self, &Rc<T>) -> bool
fn ge(&self, &Rc<T>) -> bool
impl<T> Ord for Rc<T> where T: Ord
fn cmp(&self, other: &Rc<T>) -> Ordering
Comparison for two Rc<T>s.
The two are compared by calling cmp() on their inner values.
Examples
fn main() { use std::rc::Rc; let five = Rc::new(5); five.partial_cmp(&Rc::new(5)); }use std::rc::Rc; let five = Rc::new(5); five.partial_cmp(&Rc::new(5));