#[non_exhaustive]
pub enum FiberOpticCableType {
MultiMode,
SingleMode,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against FiberOpticCableType
, 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 fiberopticcabletype = unimplemented!();
match fiberopticcabletype {
FiberOpticCableType::MultiMode => { /* ... */ },
FiberOpticCableType::SingleMode => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when fiberopticcabletype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant FiberOpticCableType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
FiberOpticCableType::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 FiberOpticCableType::NewFeature
is defined.
Specifically, when fiberopticcabletype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on FiberOpticCableType::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
MultiMode
SingleMode
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl FiberOpticCableType
impl FiberOpticCableType
sourcepub fn as_str(&self) -> &str
pub fn as_str(&self) -> &str
Returns the &str
value of the enum member.
Examples found in repository?
More examples
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pub fn serialize_structure_crate_input_update_site_rack_physical_properties_input(
object: &mut aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::input::UpdateSiteRackPhysicalPropertiesInput,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
if let Some(var_47) = &input.fiber_optic_cable_type {
object.key("FiberOpticCableType").string(var_47.as_str());
}
if let Some(var_48) = &input.maximum_supported_weight_lbs {
object
.key("MaximumSupportedWeightLbs")
.string(var_48.as_str());
}
if let Some(var_49) = &input.optical_standard {
object.key("OpticalStandard").string(var_49.as_str());
}
if let Some(var_50) = &input.power_connector {
object.key("PowerConnector").string(var_50.as_str());
}
if let Some(var_51) = &input.power_draw_kva {
object.key("PowerDrawKva").string(var_51.as_str());
}
if let Some(var_52) = &input.power_feed_drop {
object.key("PowerFeedDrop").string(var_52.as_str());
}
if let Some(var_53) = &input.power_phase {
object.key("PowerPhase").string(var_53.as_str());
}
if let Some(var_54) = &input.uplink_count {
object.key("UplinkCount").string(var_54.as_str());
}
if let Some(var_55) = &input.uplink_gbps {
object.key("UplinkGbps").string(var_55.as_str());
}
Ok(())
}
pub fn serialize_structure_crate_model_line_item_request(
object: &mut aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::model::LineItemRequest,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
if let Some(var_56) = &input.catalog_item_id {
object.key("CatalogItemId").string(var_56.as_str());
}
if input.quantity != 0 {
object.key("Quantity").number(
#[allow(clippy::useless_conversion)]
aws_smithy_types::Number::NegInt((input.quantity).into()),
);
}
Ok(())
}
pub fn serialize_structure_crate_model_address(
object: &mut aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::model::Address,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
if let Some(var_57) = &input.contact_name {
object.key("ContactName").string(var_57.as_str());
}
if let Some(var_58) = &input.contact_phone_number {
object.key("ContactPhoneNumber").string(var_58.as_str());
}
if let Some(var_59) = &input.address_line1 {
object.key("AddressLine1").string(var_59.as_str());
}
if let Some(var_60) = &input.address_line2 {
object.key("AddressLine2").string(var_60.as_str());
}
if let Some(var_61) = &input.address_line3 {
object.key("AddressLine3").string(var_61.as_str());
}
if let Some(var_62) = &input.city {
object.key("City").string(var_62.as_str());
}
if let Some(var_63) = &input.state_or_region {
object.key("StateOrRegion").string(var_63.as_str());
}
if let Some(var_64) = &input.district_or_county {
object.key("DistrictOrCounty").string(var_64.as_str());
}
if let Some(var_65) = &input.postal_code {
object.key("PostalCode").string(var_65.as_str());
}
if let Some(var_66) = &input.country_code {
object.key("CountryCode").string(var_66.as_str());
}
if let Some(var_67) = &input.municipality {
object.key("Municipality").string(var_67.as_str());
}
Ok(())
}
pub fn serialize_structure_crate_model_rack_physical_properties(
object: &mut aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::model::RackPhysicalProperties,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
if let Some(var_68) = &input.power_draw_kva {
object.key("PowerDrawKva").string(var_68.as_str());
}
if let Some(var_69) = &input.power_phase {
object.key("PowerPhase").string(var_69.as_str());
}
if let Some(var_70) = &input.power_connector {
object.key("PowerConnector").string(var_70.as_str());
}
if let Some(var_71) = &input.power_feed_drop {
object.key("PowerFeedDrop").string(var_71.as_str());
}
if let Some(var_72) = &input.uplink_gbps {
object.key("UplinkGbps").string(var_72.as_str());
}
if let Some(var_73) = &input.uplink_count {
object.key("UplinkCount").string(var_73.as_str());
}
if let Some(var_74) = &input.fiber_optic_cable_type {
object.key("FiberOpticCableType").string(var_74.as_str());
}
if let Some(var_75) = &input.optical_standard {
object.key("OpticalStandard").string(var_75.as_str());
}
if let Some(var_76) = &input.maximum_supported_weight_lbs {
object
.key("MaximumSupportedWeightLbs")
.string(var_76.as_str());
}
Ok(())
}
Trait Implementations§
source§impl AsRef<str> for FiberOpticCableType
impl AsRef<str> for FiberOpticCableType
source§impl Clone for FiberOpticCableType
impl Clone for FiberOpticCableType
source§fn clone(&self) -> FiberOpticCableType
fn clone(&self) -> FiberOpticCableType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for FiberOpticCableType
impl Debug for FiberOpticCableType
source§impl From<&str> for FiberOpticCableType
impl From<&str> for FiberOpticCableType
source§impl FromStr for FiberOpticCableType
impl FromStr for FiberOpticCableType
source§impl Hash for FiberOpticCableType
impl Hash for FiberOpticCableType
source§impl Ord for FiberOpticCableType
impl Ord for FiberOpticCableType
source§fn cmp(&self, other: &FiberOpticCableType) -> Ordering
fn cmp(&self, other: &FiberOpticCableType) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<FiberOpticCableType> for FiberOpticCableType
impl PartialEq<FiberOpticCableType> for FiberOpticCableType
source§fn eq(&self, other: &FiberOpticCableType) -> bool
fn eq(&self, other: &FiberOpticCableType) -> bool
source§impl PartialOrd<FiberOpticCableType> for FiberOpticCableType
impl PartialOrd<FiberOpticCableType> for FiberOpticCableType
source§fn partial_cmp(&self, other: &FiberOpticCableType) -> Option<Ordering>
fn partial_cmp(&self, other: &FiberOpticCableType) -> 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 FiberOpticCableType
impl StructuralEq for FiberOpticCableType
impl StructuralPartialEq for FiberOpticCableType
Auto Trait Implementations§
impl RefUnwindSafe for FiberOpticCableType
impl Send for FiberOpticCableType
impl Sync for FiberOpticCableType
impl Unpin for FiberOpticCableType
impl UnwindSafe for FiberOpticCableType
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.