Struct petgraph::matrix_graph::NotZero

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pub struct NotZero<T>(_);
Expand description

NotZero is used to optimize the memory usage of edge weights E in a MatrixGraph, replacing the default Option<E> sentinel.

Pre-requisite: edge weight should implement Zero.

Note that if you’re already using the standard non-zero types (such as NonZeroU32), you don’t have to use this wrapper and can leave the default Null type argument.

Trait Implementations§

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impl<T: Zero> Default for NotZero<T>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<T: Zero> From<NotZero<T>> for Option<T>

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fn from(not_zero: NotZero<T>) -> Self

Converts to this type from the input type.
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impl<T: Zero> Nullable for NotZero<T>

Auto Trait Implementations§

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impl<T> RefUnwindSafe for NotZero<T>where
T: RefUnwindSafe,

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impl<T> Send for NotZero<T>where
T: Send,

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impl<T> Sync for NotZero<T>where
T: Sync,

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impl<T> Unpin for NotZero<T>where
T: Unpin,

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impl<T> UnwindSafe for NotZero<T>where
T: 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> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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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, 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.
const: unstable · source§

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.