Enum edgedb_protocol::common::Cardinality

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pub enum Cardinality {
    NoResult,
    AtMostOne,
    One,
    Many,
    AtLeastOne,
}

Variants

`NoResult`

`AtMostOne`

`One`

`Many`

`AtLeastOne`

Implementations

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impl Cardinality

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pub fn is_optional(&self) -> bool

Trait Implementations

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impl Clone for Cardinality

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fn clone(&self) -> Cardinality

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for Cardinality

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

Formats the value using the given formatter. Read more

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impl PartialEq<Cardinality> for Cardinality

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fn eq(&self, other: &Cardinality) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

1.0.0 · source

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

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impl TryFrom<u8> for Cardinality

type Error = DecodeError

The type returned in the event of a conversion error.

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fn try_from(cardinality: u8) -> Result<Cardinality, DecodeError>

Performs the conversion.

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impl StructuralPartialEq for Cardinality

Auto Trait Implementations

impl RefUnwindSafe for Cardinality

impl Send for Cardinality

impl Sync for Cardinality

impl Unpin for Cardinality

impl UnwindSafe for Cardinality

Blanket Implementations

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impl<T> Any for T where
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 T where
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 T where
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 for T where
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> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

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>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Enum edgedb_protocol::common::Cardinality

Variants

NoResult

AtMostOne

One

Many

AtLeastOne

Implementations

impl Cardinality

pub fn is_optional(&self) -> bool

Trait Implementations

impl Clone for Cardinality

fn clone(&self) -> Cardinality

fn clone_from(&mut self, source: &Self)

impl Debug for Cardinality

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

impl PartialEq<Cardinality> for Cardinality

fn eq(&self, other: &Cardinality) -> bool

fn ne(&self, other: &Rhs) -> bool

impl TryFrom<u8> for Cardinality

type Error = DecodeError

fn try_from(cardinality: u8) -> Result<Cardinality, DecodeError>

impl Copy for Cardinality

impl Eq for Cardinality

impl StructuralEq for Cardinality

impl StructuralPartialEq for Cardinality

Auto Trait Implementations

impl RefUnwindSafe for Cardinality

impl Send for Cardinality

impl Sync for Cardinality

impl Unpin for Cardinality

impl UnwindSafe for Cardinality

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

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

`NoResult`

`AtMostOne`

`One`

`Many`

`AtLeastOne`

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,