Enum aws_sdk_ecs::types::ManagedAgentName
source · #[non_exhaustive]pub enum ManagedAgentName {
ExecuteCommandAgent,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against ManagedAgentName, 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 managedagentname = unimplemented!();
match managedagentname {
ManagedAgentName::ExecuteCommandAgent => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when managedagentname represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ManagedAgentName::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
ManagedAgentName::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 ManagedAgentName::NewFeature is defined.
Specifically, when managedagentname represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on ManagedAgentName::NewFeature also yielding "NewFeature".
Explicitly matching on the Unknown variant should
be avoided for two reasons:
- The inner data
UnknownVariantValueis opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
ExecuteCommandAgent
Unknown(UnknownVariantValue)
Unknown. See the docs on this enum for the correct way to handle unknown variants.Unknown contains new variants that have been added since this code was generated.
Implementations§
source§impl ManagedAgentName
impl ManagedAgentName
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for ManagedAgentName
impl AsRef<str> for ManagedAgentName
source§impl Clone for ManagedAgentName
impl Clone for ManagedAgentName
source§fn clone(&self) -> ManagedAgentName
fn clone(&self) -> ManagedAgentName
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for ManagedAgentName
impl Debug for ManagedAgentName
source§impl From<&str> for ManagedAgentName
impl From<&str> for ManagedAgentName
source§impl FromStr for ManagedAgentName
impl FromStr for ManagedAgentName
source§impl Hash for ManagedAgentName
impl Hash for ManagedAgentName
source§impl Ord for ManagedAgentName
impl Ord for ManagedAgentName
source§fn cmp(&self, other: &ManagedAgentName) -> Ordering
fn cmp(&self, other: &ManagedAgentName) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for ManagedAgentName
impl PartialEq for ManagedAgentName
source§fn eq(&self, other: &ManagedAgentName) -> bool
fn eq(&self, other: &ManagedAgentName) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd for ManagedAgentName
impl PartialOrd for ManagedAgentName
source§fn partial_cmp(&self, other: &ManagedAgentName) -> Option<Ordering>
fn partial_cmp(&self, other: &ManagedAgentName) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self and other) and is used by the <=
operator. Read moreimpl Eq for ManagedAgentName
impl StructuralEq for ManagedAgentName
impl StructuralPartialEq for ManagedAgentName
Auto Trait Implementations§
impl RefUnwindSafe for ManagedAgentName
impl Send for ManagedAgentName
impl Sync for ManagedAgentName
impl Unpin for ManagedAgentName
impl UnwindSafe for ManagedAgentName
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key and return true if they are equal.