Enum aws_sdk_fsx::types::AutocommitPeriodType
source · #[non_exhaustive]pub enum AutocommitPeriodType {
Days,
Hours,
Minutes,
Months,
None,
Years,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against AutocommitPeriodType
, 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 autocommitperiodtype = unimplemented!();
match autocommitperiodtype {
AutocommitPeriodType::Days => { /* ... */ },
AutocommitPeriodType::Hours => { /* ... */ },
AutocommitPeriodType::Minutes => { /* ... */ },
AutocommitPeriodType::Months => { /* ... */ },
AutocommitPeriodType::None => { /* ... */ },
AutocommitPeriodType::Years => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when autocommitperiodtype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant AutocommitPeriodType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
AutocommitPeriodType::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 AutocommitPeriodType::NewFeature
is defined.
Specifically, when autocommitperiodtype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on AutocommitPeriodType::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
Days
Hours
Minutes
Months
None
Years
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 AutocommitPeriodType
impl AutocommitPeriodType
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 AutocommitPeriodType
impl AsRef<str> for AutocommitPeriodType
source§impl Clone for AutocommitPeriodType
impl Clone for AutocommitPeriodType
source§fn clone(&self) -> AutocommitPeriodType
fn clone(&self) -> AutocommitPeriodType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for AutocommitPeriodType
impl Debug for AutocommitPeriodType
source§impl Display for AutocommitPeriodType
impl Display for AutocommitPeriodType
source§impl From<&str> for AutocommitPeriodType
impl From<&str> for AutocommitPeriodType
source§impl FromStr for AutocommitPeriodType
impl FromStr for AutocommitPeriodType
source§impl Hash for AutocommitPeriodType
impl Hash for AutocommitPeriodType
source§impl Ord for AutocommitPeriodType
impl Ord for AutocommitPeriodType
source§fn cmp(&self, other: &AutocommitPeriodType) -> Ordering
fn cmp(&self, other: &AutocommitPeriodType) -> 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 AutocommitPeriodType
impl PartialEq for AutocommitPeriodType
source§fn eq(&self, other: &AutocommitPeriodType) -> bool
fn eq(&self, other: &AutocommitPeriodType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for AutocommitPeriodType
impl PartialOrd for AutocommitPeriodType
source§fn partial_cmp(&self, other: &AutocommitPeriodType) -> Option<Ordering>
fn partial_cmp(&self, other: &AutocommitPeriodType) -> 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 AutocommitPeriodType
impl StructuralPartialEq for AutocommitPeriodType
Auto Trait Implementations§
impl Freeze for AutocommitPeriodType
impl RefUnwindSafe for AutocommitPeriodType
impl Send for AutocommitPeriodType
impl Sync for AutocommitPeriodType
impl Unpin for AutocommitPeriodType
impl UnwindSafe for AutocommitPeriodType
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
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more