Enum aws_sdk_appstream::types::StackAttribute

#[non_exhaustive]
pub enum StackAttribute {
    AccessEndpoints,
    EmbedHostDomains,
    FeedbackUrl,
    IamRoleArn,
    RedirectUrl,
    StorageConnectors,
    StorageConnectorGoogleDrive,
    StorageConnectorHomefolders,
    StorageConnectorOneDrive,
    StreamingExperienceSettings,
    ThemeName,
    UserSettings,
    Unknown(UnknownVariantValue),
}

When writing a match expression against StackAttribute, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

Here is an example of how you can make a match expression forward-compatible:

# let stackattribute = unimplemented!();
match stackattribute {
    StackAttribute::AccessEndpoints => { /* ... */ },
    StackAttribute::EmbedHostDomains => { /* ... */ },
    StackAttribute::FeedbackUrl => { /* ... */ },
    StackAttribute::IamRoleArn => { /* ... */ },
    StackAttribute::RedirectUrl => { /* ... */ },
    StackAttribute::StorageConnectors => { /* ... */ },
    StackAttribute::StorageConnectorGoogleDrive => { /* ... */ },
    StackAttribute::StorageConnectorHomefolders => { /* ... */ },
    StackAttribute::StorageConnectorOneDrive => { /* ... */ },
    StackAttribute::StreamingExperienceSettings => { /* ... */ },
    StackAttribute::ThemeName => { /* ... */ },
    StackAttribute::UserSettings => { /* ... */ },
    other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
    _ => { /* ... */ },
}

The above code demonstrates that when stackattribute represents NewFeature, the execution path will lead to the second last match arm, even though the enum does not contain a variant StackAttribute::NewFeature in the current version of SDK. The reason is that the variable other, created by the @ operator, is bound to StackAttribute::Unknown(UnknownVariantValue("NewFeature".to_owned())) and calling as_str on it yields "NewFeature". This match expression is forward-compatible when executed with a newer version of SDK where the variant StackAttribute::NewFeature is defined. Specifically, when stackattribute represents NewFeature, the execution path will hit the second last match arm as before by virtue of calling as_str on StackAttribute::NewFeature also yielding "NewFeature".

Explicitly matching on the Unknown variant should be avoided for two reasons:

• The inner data UnknownVariantValue is opaque, and no further information can be extracted.
• It might inadvertently shadow other intended match arms.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

AccessEndpoints

EmbedHostDomains

FeedbackUrl

IamRoleArn

RedirectUrl

StorageConnectors

StorageConnectorGoogleDrive

StorageConnectorHomefolders

StorageConnectorOneDrive

StreamingExperienceSettings

ThemeName

UserSettings

Unknown(UnknownVariantValue)

Unknown contains new variants that have been added since this code was generated.

Implementations

impl StackAttribute

pub fn as_str(&self) -> &str

Returns the &str value of the enum member.

pub const fn values() -> &'static [&'static str]

Returns all the &str representations of the enum members.

Trait Implementations

impl AsRef<str> for StackAttribute

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for StackAttribute

fn clone(&self) -> StackAttribute

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StackAttribute

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

Formats the value using the given formatter.

impl From<&str> for StackAttribute

fn from(s: &str) -> Self

Converts to this type from the input type.

impl FromStr for StackAttribute

type Err = Infallible

The associated error which can be returned from parsing.

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

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

impl Hash for StackAttribute

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

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 Ord for StackAttribute

fn cmp(&self, other: &StackAttribute) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<StackAttribute> for StackAttribute

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<StackAttribute> for StackAttribute

fn partial_cmp(&self, other: &StackAttribute) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for StackAttribute

impl StructuralEq for StackAttribute

impl StructuralPartialEq for StackAttribute