#[non_exhaustive]pub enum TaskTemplateFieldType {
Show 13 variants
Boolean,
DateTime,
Description,
Email,
Name,
Number,
QuickConnect,
ScheduledTime,
SingleSelect,
Text,
TextArea,
Url,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against TaskTemplateFieldType
, 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 tasktemplatefieldtype = unimplemented!();
match tasktemplatefieldtype {
TaskTemplateFieldType::Boolean => { /* ... */ },
TaskTemplateFieldType::DateTime => { /* ... */ },
TaskTemplateFieldType::Description => { /* ... */ },
TaskTemplateFieldType::Email => { /* ... */ },
TaskTemplateFieldType::Name => { /* ... */ },
TaskTemplateFieldType::Number => { /* ... */ },
TaskTemplateFieldType::QuickConnect => { /* ... */ },
TaskTemplateFieldType::ScheduledTime => { /* ... */ },
TaskTemplateFieldType::SingleSelect => { /* ... */ },
TaskTemplateFieldType::Text => { /* ... */ },
TaskTemplateFieldType::TextArea => { /* ... */ },
TaskTemplateFieldType::Url => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when tasktemplatefieldtype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant TaskTemplateFieldType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
TaskTemplateFieldType::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 TaskTemplateFieldType::NewFeature
is defined.
Specifically, when tasktemplatefieldtype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on TaskTemplateFieldType::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
Boolean
DateTime
Description
Name
Number
QuickConnect
ScheduledTime
SingleSelect
Text
TextArea
Url
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for TaskTemplateFieldType
impl AsRef<str> for TaskTemplateFieldType
source§impl Clone for TaskTemplateFieldType
impl Clone for TaskTemplateFieldType
source§fn clone(&self) -> TaskTemplateFieldType
fn clone(&self) -> TaskTemplateFieldType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for TaskTemplateFieldType
impl Debug for TaskTemplateFieldType
source§impl From<&str> for TaskTemplateFieldType
impl From<&str> for TaskTemplateFieldType
source§impl FromStr for TaskTemplateFieldType
impl FromStr for TaskTemplateFieldType
source§impl Hash for TaskTemplateFieldType
impl Hash for TaskTemplateFieldType
source§impl Ord for TaskTemplateFieldType
impl Ord for TaskTemplateFieldType
source§fn cmp(&self, other: &TaskTemplateFieldType) -> Ordering
fn cmp(&self, other: &TaskTemplateFieldType) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<TaskTemplateFieldType> for TaskTemplateFieldType
impl PartialEq<TaskTemplateFieldType> for TaskTemplateFieldType
source§fn eq(&self, other: &TaskTemplateFieldType) -> bool
fn eq(&self, other: &TaskTemplateFieldType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<TaskTemplateFieldType> for TaskTemplateFieldType
impl PartialOrd<TaskTemplateFieldType> for TaskTemplateFieldType
source§fn partial_cmp(&self, other: &TaskTemplateFieldType) -> Option<Ordering>
fn partial_cmp(&self, other: &TaskTemplateFieldType) -> 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 TaskTemplateFieldType
impl StructuralEq for TaskTemplateFieldType
impl StructuralPartialEq for TaskTemplateFieldType
Auto Trait Implementations§
impl RefUnwindSafe for TaskTemplateFieldType
impl Send for TaskTemplateFieldType
impl Sync for TaskTemplateFieldType
impl Unpin for TaskTemplateFieldType
impl UnwindSafe for TaskTemplateFieldType
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.