Enum aws_sdk_securityhub::model::DateRangeUnit
source · #[non_exhaustive]
pub enum DateRangeUnit {
Days,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against DateRangeUnit
, 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 daterangeunit = unimplemented!();
match daterangeunit {
DateRangeUnit::Days => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when daterangeunit
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant DateRangeUnit::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
DateRangeUnit::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 DateRangeUnit::NewFeature
is defined.
Specifically, when daterangeunit
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on DateRangeUnit::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
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for DateRangeUnit
impl AsRef<str> for DateRangeUnit
source§impl Clone for DateRangeUnit
impl Clone for DateRangeUnit
source§fn clone(&self) -> DateRangeUnit
fn clone(&self) -> DateRangeUnit
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for DateRangeUnit
impl Debug for DateRangeUnit
source§impl From<&str> for DateRangeUnit
impl From<&str> for DateRangeUnit
source§impl FromStr for DateRangeUnit
impl FromStr for DateRangeUnit
source§impl Hash for DateRangeUnit
impl Hash for DateRangeUnit
source§impl Ord for DateRangeUnit
impl Ord for DateRangeUnit
source§fn cmp(&self, other: &DateRangeUnit) -> Ordering
fn cmp(&self, other: &DateRangeUnit) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<DateRangeUnit> for DateRangeUnit
impl PartialEq<DateRangeUnit> for DateRangeUnit
source§fn eq(&self, other: &DateRangeUnit) -> bool
fn eq(&self, other: &DateRangeUnit) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<DateRangeUnit> for DateRangeUnit
impl PartialOrd<DateRangeUnit> for DateRangeUnit
source§fn partial_cmp(&self, other: &DateRangeUnit) -> Option<Ordering>
fn partial_cmp(&self, other: &DateRangeUnit) -> 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 DateRangeUnit
impl StructuralEq for DateRangeUnit
impl StructuralPartialEq for DateRangeUnit
Auto Trait Implementations§
impl RefUnwindSafe for DateRangeUnit
impl Send for DateRangeUnit
impl Sync for DateRangeUnit
impl Unpin for DateRangeUnit
impl UnwindSafe for DateRangeUnit
Blanket Implementations§
source§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.