[−][src]Struct contrail::storage::Backtrackable
Objects stored on the trail in backtrackable memory.
Instead of using Backtrackable
directly, it's often easier to use the type definitions
BacktrackableValue
and
BacktrackableArray
.
Examples
use contrail::{BacktrackableValue, TrailBuilder}; let mut builder = TrailBuilder::new(); let backtrackable_counter = BacktrackableValue::new(&mut builder, 0); let mut trail = builder.finish(); assert_eq!(backtrackable_counter.get(&trail), 0); trail.new_level(); backtrackable_counter.update(&mut trail, |x| x + 1); assert_eq!(backtrackable_counter.get(&trail), 1); trail.backtrack(); assert_eq!(backtrackable_counter.get(&trail), 0);
Trait Implementations
impl StorageMode for Backtrackable
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fn builder_mut(builder: &mut TrailBuilder) -> &mut MemoryBuilder
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fn memory(trail: &Trail) -> &Memory
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fn memory_mut(trail: &mut Trail) -> &mut Memory
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impl Eq for Backtrackable
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impl Copy for Backtrackable
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impl PartialOrd<Backtrackable> for Backtrackable
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fn partial_cmp(&self, other: &Backtrackable) -> Option<Ordering>
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#[must_use]
fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]
fn le(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
#[must_use]
fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
#[must_use]
fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl Default for Backtrackable
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fn default() -> Backtrackable
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impl PartialEq<Backtrackable> for Backtrackable
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fn eq(&self, other: &Backtrackable) -> bool
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#[must_use]
fn ne(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests for !=
.
impl Ord for Backtrackable
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fn cmp(&self, other: &Backtrackable) -> Ordering
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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
impl Clone for Backtrackable
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fn clone(&self) -> Backtrackable
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fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl Debug for Backtrackable
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impl Hash for Backtrackable
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Auto Trait Implementations
impl Send for Backtrackable
impl Sync for Backtrackable
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
impl<T> From for T
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impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = !
try_from
)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> Borrow 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,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,