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