Enum Anchor 

pub enum Anchor {
    Newest,
    Oldest,
    FirstUnread,
    MessageId(u64),
}

Represents a filter anchor to provide a baseline for searching.

Variants

Newest

Filter relative to the newest message.

Oldest

Filter relative to the oldest message.

FirstUnread

Filter relative to the first unread message.

MessageId(u64)

Filter relative to the provided message ID.

Implementations

impl Anchor

pub const NEWEST: &str = "newest"

Represents the string value of the newest Anchor.

pub const OLDEST: &str = "oldest"

Represents the string value of the oldest Anchor.

pub const FIRST_UNREAD: &str = "first_unread"

Represents the string value of the first unread Anchor.

pub const fn new() -> Self

Creates a new Anchor.

pub fn try_from_str(val: &str) -> Result<Self, Error>

Attempts to parse the provided string into an Anchor.

Trait Implementations

impl Clone for Anchor

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Anchor

impl Debug for Anchor

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

Formats the value using the given formatter.

impl Default for Anchor

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Anchor

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Anchor

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

Formats the value using the given formatter.

impl Eq for Anchor

impl From<&Anchor> for String

fn from(val: &Anchor) -> Self

Converts to this type from the input type.

impl From<Anchor> for String

fn from(val: Anchor) -> Self

Converts to this type from the input type.

impl PartialEq for Anchor

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Anchor

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Anchor

impl TryFrom<&str> for Anchor

type Error = Error

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<String> for Anchor

type Error = Error

The type returned in the event of a conversion error.

fn try_from(val: String) -> Result<Self, Self::Error>

Performs the conversion.