#[non_exhaustive]
pub enum ConditionalFormattingIconSetType {
Bars,
CaretUpMinusDown,
CheckX,
Flags,
FourColorArrow,
FourGrayArrow,
PlusMinus,
ThreeCircle,
ThreeColorArrow,
ThreeGrayArrow,
ThreeShape,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ConditionalFormattingIconSetType
, 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 conditionalformattingiconsettype = unimplemented!();
match conditionalformattingiconsettype {
ConditionalFormattingIconSetType::Bars => { /* ... */ },
ConditionalFormattingIconSetType::CaretUpMinusDown => { /* ... */ },
ConditionalFormattingIconSetType::CheckX => { /* ... */ },
ConditionalFormattingIconSetType::Flags => { /* ... */ },
ConditionalFormattingIconSetType::FourColorArrow => { /* ... */ },
ConditionalFormattingIconSetType::FourGrayArrow => { /* ... */ },
ConditionalFormattingIconSetType::PlusMinus => { /* ... */ },
ConditionalFormattingIconSetType::ThreeCircle => { /* ... */ },
ConditionalFormattingIconSetType::ThreeColorArrow => { /* ... */ },
ConditionalFormattingIconSetType::ThreeGrayArrow => { /* ... */ },
ConditionalFormattingIconSetType::ThreeShape => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when conditionalformattingiconsettype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ConditionalFormattingIconSetType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ConditionalFormattingIconSetType::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 ConditionalFormattingIconSetType::NewFeature
is defined.
Specifically, when conditionalformattingiconsettype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ConditionalFormattingIconSetType::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
Bars
CaretUpMinusDown
CheckX
Flags
FourColorArrow
FourGrayArrow
PlusMinus
ThreeCircle
ThreeColorArrow
ThreeGrayArrow
ThreeShape
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for ConditionalFormattingIconSetType
impl AsRef<str> for ConditionalFormattingIconSetType
source§impl Clone for ConditionalFormattingIconSetType
impl Clone for ConditionalFormattingIconSetType
source§fn clone(&self) -> ConditionalFormattingIconSetType
fn clone(&self) -> ConditionalFormattingIconSetType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl From<&str> for ConditionalFormattingIconSetType
impl From<&str> for ConditionalFormattingIconSetType
source§impl Ord for ConditionalFormattingIconSetType
impl Ord for ConditionalFormattingIconSetType
source§fn cmp(&self, other: &ConditionalFormattingIconSetType) -> Ordering
fn cmp(&self, other: &ConditionalFormattingIconSetType) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<ConditionalFormattingIconSetType> for ConditionalFormattingIconSetType
impl PartialEq<ConditionalFormattingIconSetType> for ConditionalFormattingIconSetType
source§fn eq(&self, other: &ConditionalFormattingIconSetType) -> bool
fn eq(&self, other: &ConditionalFormattingIconSetType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<ConditionalFormattingIconSetType> for ConditionalFormattingIconSetType
impl PartialOrd<ConditionalFormattingIconSetType> for ConditionalFormattingIconSetType
source§fn partial_cmp(
&self,
other: &ConditionalFormattingIconSetType
) -> Option<Ordering>
fn partial_cmp(
&self,
other: &ConditionalFormattingIconSetType
) -> 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 ConditionalFormattingIconSetType
impl StructuralEq for ConditionalFormattingIconSetType
impl StructuralPartialEq for ConditionalFormattingIconSetType
Auto Trait Implementations§
impl RefUnwindSafe for ConditionalFormattingIconSetType
impl Send for ConditionalFormattingIconSetType
impl Sync for ConditionalFormattingIconSetType
impl Unpin for ConditionalFormattingIconSetType
impl UnwindSafe for ConditionalFormattingIconSetType
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.