Struct lettre::message::header::Headers

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pub struct Headers { /* private fields */ }

Available on crate feature builder only.

Expand description

A set of email headers

Implementations

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impl Headers

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pub const fn new() -> Self

Create an empty Headers

This function does not allocate.

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pub fn with_capacity(capacity: usize) -> Self

Create an empty Headers with a pre-allocated capacity

Pre-allocates a capacity of at least capacity.

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pub fn get<H: Header>(&self) -> Option<H>

Returns a copy of an Header present in Headers

Returns None if Header isn’t present in Headers.

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pub fn set<H: Header>(&mut self, header: H)

Sets Header into Headers, overriding Header if it was already present in Headers

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pub fn remove<H: Header>(&mut self) -> Option<H>

Remove Header from Headers, returning it

Returns None if Header isn’t in Headers.

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pub fn clear(&mut self)

Clears Headers, removing all headers from it

Any pre-allocated capacity is left untouched.

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pub fn get_raw(&self, name: &str) -> Option<&str>

Returns a reference to the raw value of header name

Returns None if name isn’t present in Headers.

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pub fn insert_raw(&mut self, value: HeaderValue)

Inserts a raw header into Headers, overriding value if it was already present in Headers.

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pub fn remove_raw(&mut self, name: &str) -> Option<HeaderValue>

Remove a raw header from Headers, returning it

Returns None if name isn’t present in Headers.

Trait Implementations

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impl Clone for Headers

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fn clone(&self) -> Headers

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for Headers

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

Formats the value using the given formatter. Read more

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impl Default for Headers

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fn default() -> Headers

Returns the “default value” for a type. Read more

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impl Display for Headers

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

Formats Headers, ready to put them into an email

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impl TryFrom<&'_ Headers> for Envelope

type Error = Error

The type returned in the event of a conversion error.

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fn try_from(headers: &Headers) -> Result<Self, Self::Error>

Performs the conversion.

Auto Trait Implementations

impl RefUnwindSafe for Headers

impl Send for Headers

impl Sync for Headers

impl Unpin for Headers

impl UnwindSafe for Headers

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

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

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T> ToString for T where
T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

Struct lettre::message::header::Headers

Implementations

impl Headers

pub const fn new() -> Self

pub fn with_capacity(capacity: usize) -> Self

pub fn get<H: Header>(&self) -> Option<H>

pub fn set<H: Header>(&mut self, header: H)

pub fn remove<H: Header>(&mut self) -> Option<H>

pub fn clear(&mut self)

pub fn get_raw(&self, name: &str) -> Option<&str>

pub fn insert_raw(&mut self, value: HeaderValue)

pub fn remove_raw(&mut self, name: &str) -> Option<HeaderValue>

Trait Implementations

impl Clone for Headers

fn clone(&self) -> Headers

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

impl Debug for Headers

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

impl Default for Headers

fn default() -> Headers

impl Display for Headers

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

impl TryFrom<&'_ Headers> for Envelope

type Error = Error

fn try_from(headers: &Headers) -> Result<Self, Self::Error>

Auto Trait Implementations

impl RefUnwindSafe for Headers

impl Send for Headers

impl Sync for Headers

impl Unpin for Headers

impl UnwindSafe for Headers

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> Same<T> for T

type Output = T

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T> ToString for T where T: Display + ?Sized,

default fn to_string(&self) -> String

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for T where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T> ToString for T where
T: Display + ?Sized,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,