Struct KeyValue

#[non_exhaustive]
pub struct KeyValue {
    pub key: Key,
    pub value: Value,
}

A key-value pair describing an attribute.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

key: Key

The attribute name

value: Value

The attribute value

Implementations

impl KeyValue

pub fn new<K, V>(key: K, value: V) -> Self

where K: Into<Key>, V: Into<Value>,

Create a new KeyValue pair.

Trait Implementations

impl Clone for KeyValue

fn clone(&self) -> KeyValue

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for KeyValue

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

Formats the value using the given formatter.

impl From<KeyValue> for KeyValueMetadata

fn from(kv: KeyValue) -> Self

Converts to this type from the input type.

impl FromIterator<KeyValue> for Baggage

fn from_iter<I: IntoIterator<Item = KeyValue>>(iter: I) -> Self

Creates a value from an iterator.

impl Hash for KeyValue

Available on crate feature metrics only.

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for KeyValue

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for KeyValue

Available on crate feature metrics only.

impl StructuralPartialEq for KeyValue