pub struct Imbalance<B: Balance, OnDrop: HandleImbalanceDrop<B>, OppositeOnDrop: HandleImbalanceDrop<B>> { /* private fields */ }
Expand description

An imbalance in the system, representing a divergence of recorded token supply from the sum of the balances of all accounts. This is must_use in order to ensure it gets handled (placing into an account, settling from an account or altering the supply).

Importantly, it has a special Drop impl, and cannot be created outside of this module.

Trait Implementations§

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impl<B, OnDrop, OppositeOnDrop> Debug for Imbalance<B, OnDrop, OppositeOnDrop>where B: Debug + Balance, OnDrop: Debug + HandleImbalanceDrop<B>, OppositeOnDrop: Debug + HandleImbalanceDrop<B>,

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fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<B: Balance, OnDrop: HandleImbalanceDrop<B>, OppositeOnDrop: HandleImbalanceDrop<B>> Default for Imbalance<B, OnDrop, OppositeOnDrop>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<B: Balance, OnDrop: HandleImbalanceDrop<B>, OppositeOnDrop: HandleImbalanceDrop<B>> Drop for Imbalance<B, OnDrop, OppositeOnDrop>

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<B: Balance, OnDrop: HandleImbalanceDrop<B>, OppositeOnDrop: HandleImbalanceDrop<B>> Imbalance<B> for Imbalance<B, OnDrop, OppositeOnDrop>

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type Opposite = Imbalance<B, OppositeOnDrop, OnDrop>

The oppositely imbalanced type. They come in pairs.
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fn zero() -> Self

The zero imbalance. Can be destroyed with drop_zero.
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fn drop_zero(self) -> Result<(), Self>

Drop an instance cleanly. Only works if its self.value() is zero.
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fn split(self, amount: B) -> (Self, Self)

Consume self and return two independent instances; the first is guaranteed to be at most amount and the second will be the remainder.
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fn merge(self, other: Self) -> Self

Consume self and an other to return a new instance that combines both.
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fn subsume(&mut self, other: Self)

Consume an other to mutate self into a new instance that combines both.
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fn offset( self, other: Imbalance<B, OppositeOnDrop, OnDrop> ) -> SameOrOther<Self, Imbalance<B, OppositeOnDrop, OnDrop>>

Consume self and along with an opposite counterpart to return a combined result. Read more
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fn peek(&self) -> B

The raw value of self.
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fn ration(self, first: u32, second: u32) -> (Self, Self)where Balance: From<u32> + Saturating + Div<Output = Balance>,

Consume self and return two independent instances; the amounts returned will be in approximately the same ratio as first:second. Read more
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fn split_merge(self, amount: Balance, others: (Self, Self)) -> (Self, Self)

Consume self and add its two components, defined by the first component’s balance, element-wise to two pre-existing Imbalances. Read more
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fn ration_merge( self, first: u32, second: u32, others: (Self, Self) ) -> (Self, Self)where Balance: From<u32> + Saturating + Div<Output = Balance>,

Consume self and add its two components, defined by the ratio first:second, element-wise to two pre-existing Imbalances. Read more
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fn split_merge_into(self, amount: Balance, others: &mut (Self, Self))

Consume self and add its two components, defined by the first component’s balance, element-wise into two pre-existing Imbalance refs. Read more
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fn ration_merge_into(self, first: u32, second: u32, others: &mut (Self, Self))where Balance: From<u32> + Saturating + Div<Output = Balance>,

Consume self and add its two components, defined by the ratio first:second, element-wise to two pre-existing Imbalances. Read more
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fn merge_into(self, other: &mut Self)

Consume self to mutate other so that it combines both. Just like subsume, only with reversed arguments.
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fn maybe_merge(self, other: Option<Self>) -> Self

Consume self and maybe an other to return a new instance that combines both.
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fn maybe_subsume(&mut self, other: Option<Self>)

Maybe consume an other to mutate self into a new instance that combines both.
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impl<B: PartialEq + Balance, OnDrop: PartialEq + HandleImbalanceDrop<B>, OppositeOnDrop: PartialEq + HandleImbalanceDrop<B>> PartialEq<Imbalance<B, OnDrop, OppositeOnDrop>> for Imbalance<B, OnDrop, OppositeOnDrop>

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fn eq(&self, other: &Imbalance<B, OnDrop, OppositeOnDrop>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<B: Balance, OnDrop: HandleImbalanceDrop<B>, OppositeOnDrop: HandleImbalanceDrop<B>> TryDrop for Imbalance<B, OnDrop, OppositeOnDrop>

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fn try_drop(self) -> Result<(), Self>

Drop an instance cleanly. Only works if its value represents “no-operation”.

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impl<B: Eq + Balance, OnDrop: Eq + HandleImbalanceDrop<B>, OppositeOnDrop: Eq + HandleImbalanceDrop<B>> Eq for Imbalance<B, OnDrop, OppositeOnDrop>

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impl<B: Balance, OnDrop: HandleImbalanceDrop<B>, OppositeOnDrop: HandleImbalanceDrop<B>> StructuralEq for Imbalance<B, OnDrop, OppositeOnDrop>

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impl<B: Balance, OnDrop: HandleImbalanceDrop<B>, OppositeOnDrop: HandleImbalanceDrop<B>> StructuralPartialEq for Imbalance<B, OnDrop, OppositeOnDrop>

Auto Trait Implementations§

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impl<B, OnDrop, OppositeOnDrop> RefUnwindSafe for Imbalance<B, OnDrop, OppositeOnDrop>where B: RefUnwindSafe, OnDrop: RefUnwindSafe, OppositeOnDrop: RefUnwindSafe,

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impl<B, OnDrop, OppositeOnDrop> Send for Imbalance<B, OnDrop, OppositeOnDrop>where B: Send, OnDrop: Send, OppositeOnDrop: Send,

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impl<B, OnDrop, OppositeOnDrop> Sync for Imbalance<B, OnDrop, OppositeOnDrop>where B: Sync, OnDrop: Sync, OppositeOnDrop: Sync,

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impl<B, OnDrop, OppositeOnDrop> Unpin for Imbalance<B, OnDrop, OppositeOnDrop>where B: Unpin, OnDrop: Unpin, OppositeOnDrop: Unpin,

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impl<B, OnDrop, OppositeOnDrop> UnwindSafe for Imbalance<B, OnDrop, OppositeOnDrop>where B: UnwindSafe, OnDrop: UnwindSafe, OppositeOnDrop: UnwindSafe,

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self>where Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more
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fn checked_into<T>(self) -> Option<T>where Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more
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impl<T> Clear for Twhere T: Default + Eq + PartialEq<T>,

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fn is_clear(&self) -> bool

True iff no bits are set.
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fn clear() -> T

Return the value of Self that is clear.
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impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, Outer> IsWrappedBy<Outer> for Twhere Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

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fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

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fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

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impl<T> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T> SaturatedConversion for T

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fn saturated_from<T>(t: T) -> Selfwhere Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more
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fn saturated_into<T>(self) -> Twhere Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<S, T> UncheckedInto<T> for Swhere T: UncheckedFrom<S>,

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fn unchecked_into(self) -> T

The counterpart to unchecked_from.
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impl<T, S> UniqueSaturatedInto<T> for Swhere T: Bounded, S: TryInto<T>,

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fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> JsonSchemaMaybe for T

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impl<T> MaybeDebug for Twhere T: Debug,

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impl<T> MaybeRefUnwindSafe for Twhere T: RefUnwindSafe,