#[non_exhaustive]pub enum ExportableLambdaFunctionField {
Show 32 variants
AccountId,
CurrentConfigurationMemorySize,
CurrentConfigurationTimeout,
CurrentCostAverage,
CurrentCostTotal,
CurrentPerformanceRisk,
EffectiveRecommendationPreferencesSavingsEstimationMode,
Finding,
FindingReasonCodes,
FunctionArn,
FunctionVersion,
LastRefreshTimestamp,
LookbackPeriodInDays,
NumberOfInvocations,
RecommendationOptionsConfigurationMemorySize,
RecommendationOptionsCostHigh,
RecommendationOptionsCostLow,
RecommendationOptionsEstimatedMonthlySavingsCurrency,
RecommendationOptionsEstimatedMonthlySavingsCurrencyAfterDiscounts,
RecommendationOptionsEstimatedMonthlySavingsValue,
RecommendationOptionsEstimatedMonthlySavingsValueAfterDiscounts,
RecommendationOptionsProjectedUtilizationMetricsDurationExpected,
RecommendationOptionsProjectedUtilizationMetricsDurationLowerBound,
RecommendationOptionsProjectedUtilizationMetricsDurationUpperBound,
RecommendationOptionsSavingsOpportunityAfterDiscountsPercentage,
RecommendationOptionsSavingsOpportunityPercentage,
Tags,
UtilizationMetricsDurationAverage,
UtilizationMetricsDurationMaximum,
UtilizationMetricsMemoryAverage,
UtilizationMetricsMemoryMaximum,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ExportableLambdaFunctionField
, 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 exportablelambdafunctionfield = unimplemented!();
match exportablelambdafunctionfield {
ExportableLambdaFunctionField::AccountId => { /* ... */ },
ExportableLambdaFunctionField::CurrentConfigurationMemorySize => { /* ... */ },
ExportableLambdaFunctionField::CurrentConfigurationTimeout => { /* ... */ },
ExportableLambdaFunctionField::CurrentCostAverage => { /* ... */ },
ExportableLambdaFunctionField::CurrentCostTotal => { /* ... */ },
ExportableLambdaFunctionField::CurrentPerformanceRisk => { /* ... */ },
ExportableLambdaFunctionField::EffectiveRecommendationPreferencesSavingsEstimationMode => { /* ... */ },
ExportableLambdaFunctionField::Finding => { /* ... */ },
ExportableLambdaFunctionField::FindingReasonCodes => { /* ... */ },
ExportableLambdaFunctionField::FunctionArn => { /* ... */ },
ExportableLambdaFunctionField::FunctionVersion => { /* ... */ },
ExportableLambdaFunctionField::LastRefreshTimestamp => { /* ... */ },
ExportableLambdaFunctionField::LookbackPeriodInDays => { /* ... */ },
ExportableLambdaFunctionField::NumberOfInvocations => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsConfigurationMemorySize => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsCostHigh => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsCostLow => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsEstimatedMonthlySavingsCurrency => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsEstimatedMonthlySavingsCurrencyAfterDiscounts => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsEstimatedMonthlySavingsValue => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsEstimatedMonthlySavingsValueAfterDiscounts => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsProjectedUtilizationMetricsDurationExpected => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsProjectedUtilizationMetricsDurationLowerBound => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsProjectedUtilizationMetricsDurationUpperBound => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsSavingsOpportunityAfterDiscountsPercentage => { /* ... */ },
ExportableLambdaFunctionField::RecommendationOptionsSavingsOpportunityPercentage => { /* ... */ },
ExportableLambdaFunctionField::Tags => { /* ... */ },
ExportableLambdaFunctionField::UtilizationMetricsDurationAverage => { /* ... */ },
ExportableLambdaFunctionField::UtilizationMetricsDurationMaximum => { /* ... */ },
ExportableLambdaFunctionField::UtilizationMetricsMemoryAverage => { /* ... */ },
ExportableLambdaFunctionField::UtilizationMetricsMemoryMaximum => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when exportablelambdafunctionfield
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ExportableLambdaFunctionField::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ExportableLambdaFunctionField::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 ExportableLambdaFunctionField::NewFeature
is defined.
Specifically, when exportablelambdafunctionfield
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ExportableLambdaFunctionField::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)§
This enum is marked as non-exhaustive
AccountId
CurrentConfigurationMemorySize
CurrentConfigurationTimeout
CurrentCostAverage
CurrentCostTotal
CurrentPerformanceRisk
EffectiveRecommendationPreferencesSavingsEstimationMode
Finding
FindingReasonCodes
FunctionArn
FunctionVersion
LastRefreshTimestamp
LookbackPeriodInDays
NumberOfInvocations
RecommendationOptionsConfigurationMemorySize
RecommendationOptionsCostHigh
RecommendationOptionsCostLow
RecommendationOptionsEstimatedMonthlySavingsCurrency
RecommendationOptionsEstimatedMonthlySavingsCurrencyAfterDiscounts
RecommendationOptionsEstimatedMonthlySavingsValue
RecommendationOptionsEstimatedMonthlySavingsValueAfterDiscounts
RecommendationOptionsProjectedUtilizationMetricsDurationExpected
RecommendationOptionsProjectedUtilizationMetricsDurationLowerBound
RecommendationOptionsProjectedUtilizationMetricsDurationUpperBound
RecommendationOptionsSavingsOpportunityAfterDiscountsPercentage
RecommendationOptionsSavingsOpportunityPercentage
Tags
UtilizationMetricsDurationAverage
UtilizationMetricsDurationMaximum
UtilizationMetricsMemoryAverage
UtilizationMetricsMemoryMaximum
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 ExportableLambdaFunctionField
impl ExportableLambdaFunctionField
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 ExportableLambdaFunctionField
impl AsRef<str> for ExportableLambdaFunctionField
source§impl Clone for ExportableLambdaFunctionField
impl Clone for ExportableLambdaFunctionField
source§fn clone(&self) -> ExportableLambdaFunctionField
fn clone(&self) -> ExportableLambdaFunctionField
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl From<&str> for ExportableLambdaFunctionField
impl From<&str> for ExportableLambdaFunctionField
source§impl Hash for ExportableLambdaFunctionField
impl Hash for ExportableLambdaFunctionField
source§impl Ord for ExportableLambdaFunctionField
impl Ord for ExportableLambdaFunctionField
source§fn cmp(&self, other: &ExportableLambdaFunctionField) -> Ordering
fn cmp(&self, other: &ExportableLambdaFunctionField) -> 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 ExportableLambdaFunctionField
impl PartialEq for ExportableLambdaFunctionField
source§fn eq(&self, other: &ExportableLambdaFunctionField) -> bool
fn eq(&self, other: &ExportableLambdaFunctionField) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for ExportableLambdaFunctionField
impl PartialOrd for ExportableLambdaFunctionField
source§fn partial_cmp(&self, other: &ExportableLambdaFunctionField) -> Option<Ordering>
fn partial_cmp(&self, other: &ExportableLambdaFunctionField) -> 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 ExportableLambdaFunctionField
impl StructuralEq for ExportableLambdaFunctionField
impl StructuralPartialEq for ExportableLambdaFunctionField
Auto Trait Implementations§
impl RefUnwindSafe for ExportableLambdaFunctionField
impl Send for ExportableLambdaFunctionField
impl Sync for ExportableLambdaFunctionField
impl Unpin for ExportableLambdaFunctionField
impl UnwindSafe for ExportableLambdaFunctionField
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.