Enum glean_core::traits::NoExtraKeys

pub enum NoExtraKeys {}

Default of no extra keys for events.

An enum with no values for convenient use as the default set of extra keys that an EventMetric can accept.

Note: There exist no values for this enum, it can never exist. It its equivalent to the never / ! type.

Trait Implementations

impl Clone for NoExtraKeys

fn clone(&self) -> NoExtraKeys

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for NoExtraKeys

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

Formats the value using the given formatter.

impl ExtraKeys for NoExtraKeys

const ALLOWED_KEYS: &'static [&'static str]

List of allowed extra keys as strings.

fn index(self) -> i32

The index of the extra key.

impl Hash for NoExtraKeys

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 PartialEq<NoExtraKeys> for NoExtraKeys

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

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

#[must_use]

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

This method tests for !=.

impl TryFrom<&'_ str> for NoExtraKeys

type Error = EventRecordingError

The type returned in the event of a conversion error.

fn try_from(_value: &str) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<i32> for NoExtraKeys

type Error = EventRecordingError

The type returned in the event of a conversion error.

fn try_from(_value: i32) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for NoExtraKeys

impl Eq for NoExtraKeys

impl StructuralEq for NoExtraKeys

impl StructuralPartialEq for NoExtraKeys