#[non_exhaustive]pub enum DashboardErrorType {
AccessDenied,
ColumnGeographicRoleMismatch,
ColumnReplacementMissing,
ColumnTypeMismatch,
DataSetNotFound,
InternalFailure,
ParameterNotFound,
ParameterTypeInvalid,
ParameterValueIncompatible,
SourceNotFound,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against DashboardErrorType, 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 dashboarderrortype = unimplemented!();
match dashboarderrortype {
DashboardErrorType::AccessDenied => { /* ... */ },
DashboardErrorType::ColumnGeographicRoleMismatch => { /* ... */ },
DashboardErrorType::ColumnReplacementMissing => { /* ... */ },
DashboardErrorType::ColumnTypeMismatch => { /* ... */ },
DashboardErrorType::DataSetNotFound => { /* ... */ },
DashboardErrorType::InternalFailure => { /* ... */ },
DashboardErrorType::ParameterNotFound => { /* ... */ },
DashboardErrorType::ParameterTypeInvalid => { /* ... */ },
DashboardErrorType::ParameterValueIncompatible => { /* ... */ },
DashboardErrorType::SourceNotFound => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when dashboarderrortype represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant DashboardErrorType::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
DashboardErrorType::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 DashboardErrorType::NewFeature is defined.
Specifically, when dashboarderrortype represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on DashboardErrorType::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
AccessDenied
ColumnGeographicRoleMismatch
ColumnReplacementMissing
ColumnTypeMismatch
DataSetNotFound
InternalFailure
ParameterNotFound
ParameterTypeInvalid
ParameterValueIncompatible
SourceNotFound
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 DashboardErrorType
impl DashboardErrorType
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 DashboardErrorType
impl AsRef<str> for DashboardErrorType
source§impl Clone for DashboardErrorType
impl Clone for DashboardErrorType
source§fn clone(&self) -> DashboardErrorType
fn clone(&self) -> DashboardErrorType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for DashboardErrorType
impl Debug for DashboardErrorType
source§impl From<&str> for DashboardErrorType
impl From<&str> for DashboardErrorType
source§impl FromStr for DashboardErrorType
impl FromStr for DashboardErrorType
source§impl Hash for DashboardErrorType
impl Hash for DashboardErrorType
source§impl Ord for DashboardErrorType
impl Ord for DashboardErrorType
source§fn cmp(&self, other: &DashboardErrorType) -> Ordering
fn cmp(&self, other: &DashboardErrorType) -> 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 DashboardErrorType
impl PartialEq for DashboardErrorType
source§fn eq(&self, other: &DashboardErrorType) -> bool
fn eq(&self, other: &DashboardErrorType) -> bool
self and other values to be equal, and is used
by ==.source§impl PartialOrd for DashboardErrorType
impl PartialOrd for DashboardErrorType
source§fn partial_cmp(&self, other: &DashboardErrorType) -> Option<Ordering>
fn partial_cmp(&self, other: &DashboardErrorType) -> 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 DashboardErrorType
impl StructuralEq for DashboardErrorType
impl StructuralPartialEq for DashboardErrorType
Auto Trait Implementations§
impl RefUnwindSafe for DashboardErrorType
impl Send for DashboardErrorType
impl Sync for DashboardErrorType
impl Unpin for DashboardErrorType
impl UnwindSafe for DashboardErrorType
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.