Enum aws_sdk_lexmodelsv2::model::BotFilterName
source · #[non_exhaustive]
pub enum BotFilterName {
BotName,
Unknown(UnknownVariantValue),
}Expand description
When writing a match expression against BotFilterName, 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 botfiltername = unimplemented!();
match botfiltername {
BotFilterName::BotName => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when botfiltername represents
NewFeature, the execution path will lead to the second last match arm,
even though the enum does not contain a variant BotFilterName::NewFeature
in the current version of SDK. The reason is that the variable other,
created by the @ operator, is bound to
BotFilterName::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 BotFilterName::NewFeature is defined.
Specifically, when botfiltername represents NewFeature,
the execution path will hit the second last match arm as before by virtue of
calling as_str on BotFilterName::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
BotName
Unknown(UnknownVariantValue)
Unknown contains new variants that have been added since this code was generated.
Implementations§
source§impl BotFilterName
impl BotFilterName
sourcepub fn as_str(&self) -> &str
pub fn as_str(&self) -> &str
Returns the &str value of the enum member.
Examples found in repository?
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pub fn serialize_structure_crate_model_bot_filter(
object: &mut aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::model::BotFilter,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
if let Some(var_434) = &input.name {
object.key("name").string(var_434.as_str());
}
if let Some(var_435) = &input.values {
let mut array_436 = object.key("values").start_array();
for item_437 in var_435 {
{
array_436.value().string(item_437.as_str());
}
}
array_436.finish();
}
if let Some(var_438) = &input.operator {
object.key("operator").string(var_438.as_str());
}
Ok(())
}Trait Implementations§
source§impl AsRef<str> for BotFilterName
impl AsRef<str> for BotFilterName
source§impl Clone for BotFilterName
impl Clone for BotFilterName
source§fn clone(&self) -> BotFilterName
fn clone(&self) -> BotFilterName
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresource§impl Debug for BotFilterName
impl Debug for BotFilterName
source§impl From<&str> for BotFilterName
impl From<&str> for BotFilterName
source§impl FromStr for BotFilterName
impl FromStr for BotFilterName
source§impl Hash for BotFilterName
impl Hash for BotFilterName
source§impl Ord for BotFilterName
impl Ord for BotFilterName
source§fn cmp(&self, other: &BotFilterName) -> Ordering
fn cmp(&self, other: &BotFilterName) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<BotFilterName> for BotFilterName
impl PartialEq<BotFilterName> for BotFilterName
source§fn eq(&self, other: &BotFilterName) -> bool
fn eq(&self, other: &BotFilterName) -> bool
source§impl PartialOrd<BotFilterName> for BotFilterName
impl PartialOrd<BotFilterName> for BotFilterName
source§fn partial_cmp(&self, other: &BotFilterName) -> Option<Ordering>
fn partial_cmp(&self, other: &BotFilterName) -> 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 BotFilterName
impl StructuralEq for BotFilterName
impl StructuralPartialEq for BotFilterName
Auto Trait Implementations§
impl RefUnwindSafe for BotFilterName
impl Send for BotFilterName
impl Sync for BotFilterName
impl Unpin for BotFilterName
impl UnwindSafe for BotFilterName
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.