Struct weedle::term::Null

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pub struct Null;

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Represents the terminal symbol null

Trait Implementations

impl Clone for Null[+]

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fn clone(&self) -> Null[−]

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Null

impl Debug for Null[+]

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

Formats the value using the given formatter.

impl Default for Null[+]

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fn default() -> Null[−]

Returns the "default value" for a type.

impl Eq for Null

impl<'a> From<Null> for DefaultValue<'a>[+]

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fn from(x: Null) -> Self[−]

Performs the conversion.

impl<'a> From<Null> for ConstValue<'a>[+]

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fn from(x: Null) -> Self[−]

Performs the conversion.

impl Hash for Null[+]

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

Feeds this value into the given [Hasher].

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 Null[+]

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

This method returns an [Ordering] between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

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

Restrict a value to a certain interval.

impl<'a> Parse<'a> for Null[+]

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fn parse(input: &'a str) -> IResult<&'a str, Self>

impl PartialEq<Null> for Null[+]

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fn eq(&self, other: &Null) -> bool[−]

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

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

This method tests for !=.

impl PartialOrd<Null> for Null[+]

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

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

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#[must_use] 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] 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] 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] 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 Null

impl StructuralPartialEq for Null