[−][src]Struct bacon_rajan_cc::Cc
A reference-counted pointer type over an immutable value.
See the module level documentation for more details.
Methods
impl<T: Trace> Cc<T>
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pub fn new(value: T) -> Cc<T>
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pub fn downgrade(&self) -> Weak<T>
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Downgrades the Cc<T>
to a Weak<T>
reference.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); let weak_five = five.downgrade();
impl<T: 'static + Trace> Cc<T>
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pub fn is_unique(&self) -> bool
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Returns true if there are no other Cc
or Weak<T>
values that share
the same inner value.
Examples
use bacon_rajan_cc; use bacon_rajan_cc::Cc; let five = Cc::new(5); assert_eq!(five.is_unique(), true); let another_five = five.clone(); assert_eq!(five.is_unique(), false); assert_eq!(another_five.is_unique(), false);
pub fn try_unwrap(self) -> Result<T, Cc<T>>
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Unwraps the contained value if the Cc<T>
is unique.
If the Cc<T>
is not unique, an Err
is returned with the same Cc<T>
.
Examples
use bacon_rajan_cc::Cc; let x = Cc::new(3); assert_eq!(x.try_unwrap(), Ok(3)); let x = Cc::new(4); let _y = x.clone(); assert_eq!(x.try_unwrap(), Err(Cc::new(4)));
pub fn get_mut(&mut self) -> Option<&mut T>
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Returns a mutable reference to the contained value if the Cc<T>
is
unique.
Returns None
if the Cc<T>
is not unique.
Examples
use bacon_rajan_cc::Cc; let mut x = Cc::new(3); *Cc::get_mut(&mut x).unwrap() = 4; assert_eq!(*x, 4); let _y = x.clone(); assert!(Cc::get_mut(&mut x).is_none());
pub fn strong_count(&self) -> usize
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Get the number of strong references to this value.
pub fn weak_count(&self) -> usize
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Get the number of weak references to this value.
impl<T: 'static + Clone + Trace> Cc<T>
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pub fn make_unique(&mut self) -> &mut T
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Make a mutable reference from the given Cc<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
use bacon_rajan_cc::Cc; let mut five = Cc::new(5); let mut_five = five.make_unique();
Trait Implementations
impl<T: Trace> Trace for Cc<T>
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impl<T: Trace> Clone for Cc<T>
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fn clone(&self) -> Cc<T>
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Makes a clone of the Cc<T>
.
When you clone an Cc<T>
, it will create another pointer to the data and
increase the strong reference counter.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); five.clone();
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl<T: Ord + Trace> Ord for Cc<T>
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fn cmp(&self, other: &Cc<T>) -> Ordering
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Comparison for two Cc<T>
s.
The two are compared by calling cmp()
on their inner values.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); five.partial_cmp(&Cc::new(5));
fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
fn clamp(self, min: Self, max: Self) -> Self
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clamp
)Restrict a value to a certain interval. Read more
impl<T: Default + Trace> Default for Cc<T>
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fn default() -> Cc<T>
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Creates a new Cc<T>
, with the Default
value for T
.
Examples
use bacon_rajan_cc::Cc; let x: Cc<i32> = Default::default();
impl<T: PartialOrd + Trace> PartialOrd<Cc<T>> for Cc<T>
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fn partial_cmp(&self, other: &Cc<T>) -> Option<Ordering>
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Partial comparison for two Cc<T>
s.
The two are compared by calling partial_cmp()
on their inner values.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); five.partial_cmp(&Cc::new(5));
fn lt(&self, other: &Cc<T>) -> bool
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Less-than comparison for two Cc<T>
s.
The two are compared by calling <
on their inner values.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); five < Cc::new(5);
fn le(&self, other: &Cc<T>) -> bool
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'Less-than or equal to' comparison for two Cc<T>
s.
The two are compared by calling <=
on their inner values.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); five <= Cc::new(5);
fn gt(&self, other: &Cc<T>) -> bool
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Greater-than comparison for two Cc<T>
s.
The two are compared by calling >
on their inner values.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); five > Cc::new(5);
fn ge(&self, other: &Cc<T>) -> bool
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'Greater-than or equal to' comparison for two Cc<T>
s.
The two are compared by calling >=
on their inner values.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); five >= Cc::new(5);
impl<T: PartialEq + Trace> PartialEq<Cc<T>> for Cc<T>
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fn eq(&self, other: &Cc<T>) -> bool
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Equality for two Cc<T>
s.
Two Cc<T>
s are equal if their inner value are equal.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); five == Cc::new(5);
fn ne(&self, other: &Cc<T>) -> bool
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Inequality for two Cc<T>
s.
Two Cc<T>
s are unequal if their inner value are unequal.
Examples
use bacon_rajan_cc::Cc; let five = Cc::new(5); five != Cc::new(5);
impl<T: Trace> Drop for Cc<T>
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fn drop(&mut self)
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Drops the Cc<T>
.
This will decrement the strong reference count. If the strong reference
count becomes zero and the only other references are Weak<T>
ones,
drop
s the inner value.
Examples
use bacon_rajan_cc::Cc; { let five = Cc::new(5); // stuff drop(five); // explicit drop } { let five = Cc::new(5); // stuff } // implicit drop
impl<T: Eq + Trace> Eq for Cc<T>
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impl<T: Display + Trace> Display for Cc<T>
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impl<T: Debug + Trace> Debug for Cc<T>
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impl<T: Trace> Deref for Cc<T>
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impl<T: Hash + Trace> Hash for Cc<T>
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fn hash<H: Hasher>(&self, state: &mut H)
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fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl<T: Trace> Pointer for Cc<T>
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Auto Trait Implementations
impl<T> !Sync for Cc<T>
impl<T> !Send for Cc<T>
impl<T> Unpin for Cc<T> where
T: Unpin,
T: Unpin,
impl<T> !RefUnwindSafe for Cc<T>
impl<T> !UnwindSafe for Cc<T>
Blanket Implementations
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,