Enum Preference 

pub enum Preference {
    Preferred,
    Supported,
    Disabled,
}

Preference in a capability.

The following rules apply during handshake between nodes:

• Preferred + Preferred/Supported leads to using the capability;
• Supported + Supported leads to not using the capability;
• Disabled + any leads to not using the capability.

Variants

Preferred

This is preferred, implies Supported.

Supported

This is just supported.

Disabled

Must not be used.

Trait Implementations

impl Clone for Preference

fn clone(&self) -> Preference

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Preference

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

Formats the value using the given formatter.

impl Default for Preference

fn default() -> Preference

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Preference

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Copy for Preference