Enum prost_types::NullValue

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#[repr(i32)]pub enum NullValue {
    NullValue,
}

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NullValue is a singleton enumeration to represent the null value for the Value type union.

The JSON representation for NullValue is JSON null.

Variants

NullValue

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Null value.

Implementations

impl NullValue[−]

pub fn is_valid(value: i32) -> bool[−]

Returns true if value is a variant of NullValue.

pub fn from_i32(value: i32) -> Option<NullValue>[−]

Converts an i32 to a NullValue, or None if value is not a valid variant.

Trait Implementations

impl Clone for NullValue[+]

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fn clone(&self) -> NullValue[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Copy for NullValue

impl Debug for NullValue[+]

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

Formats the value using the given formatter.

impl Default for NullValue[+]

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fn default() -> NullValue[−]

Returns the “default value” for a type.

impl Eq for NullValue

impl From<NullValue> for i32[+]

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fn from(value: NullValue) -> i32[−]

Performs the conversion.

impl Hash for NullValue[+]

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fn hash<__H: Hasher>(&self, state: &mut __H)[−]

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, [−]

Feeds a slice of this type into the given Hasher.

impl Ord for NullValue[+]

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fn cmp(&self, other: &NullValue) -> Ordering[−]

This method returns an Ordering between self and other.

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#[must_use]pub fn max(self, other: Self) -> Self[−]

Compares and returns the maximum of two values.

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#[must_use]pub fn min(self, other: Self) -> Self[−]

Compares and returns the minimum of two values.

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#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self[−]

Restrict a value to a certain interval.

impl PartialEq<NullValue> for NullValue[+]

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fn eq(&self, other: &NullValue) -> bool[−]

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

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#[must_use]pub fn ne(&self, other: &Rhs) -> bool[−]

This method tests for !=.

impl PartialOrd<NullValue> for NullValue[+]

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fn partial_cmp(&self, other: &NullValue) -> Option<Ordering>[−]

This method returns an ordering between self and other values if one exists.

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#[must_use]pub fn lt(&self, other: &Rhs) -> bool[−]

This method tests less than (for self and other) and is used by the < operator.

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#[must_use]pub fn le(&self, other: &Rhs) -> bool[−]

This method tests less than or equal to (for self and other) and is used by the <= operator.

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#[must_use]pub fn gt(&self, other: &Rhs) -> bool[−]

This method tests greater than (for self and other) and is used by the > operator.

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#[must_use]pub fn ge(&self, other: &Rhs) -> bool[−]

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for NullValue

impl StructuralPartialEq for NullValue