Struct Metadata 

pub struct Metadata {
    pub fields: HashMap<String, MetadataValue>,
}

Metadata for patterns

Fields

fields: HashMap<String, MetadataValue>

Implementations

impl Metadata

pub fn new() -> Self

Create empty metadata

pub fn with_field(key: impl Into<String>, value: MetadataValue) -> Self

Create metadata with a single field

pub fn insert( &mut self, key: impl Into<String>, value: MetadataValue, ) -> &mut Self

Add a field

Trait Implementations

impl Clone for Metadata

fn clone(&self) -> Metadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Metadata

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

Formats the value using the given formatter.

impl Default for Metadata

fn default() -> Metadata

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Metadata

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Metadata

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.