#[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
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
Csv
Tmx
Tsv
Unknown(UnknownVariantValue)
Unknown contains new variants that have been added since this code was generated.
Implementations§
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 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<TerminologyDataFormat> for TerminologyDataFormat
impl PartialEq<TerminologyDataFormat> 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<TerminologyDataFormat> for TerminologyDataFormat
impl PartialOrd<TerminologyDataFormat> 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 StructuralEq for TerminologyDataFormat
impl StructuralPartialEq for TerminologyDataFormat
Auto Trait Implementations§
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> 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.