Enum MaxImagePreviewSetting

pub enum MaxImagePreviewSetting {
    None,
    Standard,
    Large,
    Unknown(String),
}

The maximum size of an image preview for this page in a search results. If omitted, search engines may show an image preview of the default size. If you don’t want search engines to use larger thumbnail images, specify a max-image-preview value of standard or none. ¹

---

1. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Robots-Tag#max-image-preview_setting ↩

Variants

None

No image preview is to be shown.

Standard

A default image preview may be shown.

Large

A larger image preview, up to the width of the viewport, may be shown.

Unknown(String)

Implementations

impl MaxImagePreviewSetting

pub fn as_str(&self) -> &str

pub fn as_smol_str(&self) -> SmolStr

impl MaxImagePreviewSetting

pub fn strict_parse(s: &str) -> Option<MaxImagePreviewSetting>

Same as FromStr or From<&str> but returning None for unknown values

Trait Implementations

impl Clone for MaxImagePreviewSetting

fn clone(&self) -> MaxImagePreviewSetting

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MaxImagePreviewSetting

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MaxImagePreviewSetting

fn deserialize<D>( deserializer: D, ) -> Result<MaxImagePreviewSetting, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for MaxImagePreviewSetting

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

Formats the value using the given formatter.

impl<'a> From<&'a str> for MaxImagePreviewSetting

fn from(s: &'a str) -> MaxImagePreviewSetting

Converts to this type from the input type.

impl From<String> for MaxImagePreviewSetting

fn from(s: String) -> MaxImagePreviewSetting

Converts to this type from the input type.

impl FromStr for MaxImagePreviewSetting

type Err = Infallible

The associated error which can be returned from parsing.

fn from_str( s: &str, ) -> Result<MaxImagePreviewSetting, <MaxImagePreviewSetting as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for MaxImagePreviewSetting

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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 MaxImagePreviewSetting

fn eq(&self, other: &MaxImagePreviewSetting) -> 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 Serialize for MaxImagePreviewSetting

fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for MaxImagePreviewSetting

impl StructuralPartialEq for MaxImagePreviewSetting