#[non_exhaustive]pub enum BurninSubtitleAlignment {
Auto,
Centered,
Left,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against BurninSubtitleAlignment
, 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 burninsubtitlealignment = unimplemented!();
match burninsubtitlealignment {
BurninSubtitleAlignment::Auto => { /* ... */ },
BurninSubtitleAlignment::Centered => { /* ... */ },
BurninSubtitleAlignment::Left => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when burninsubtitlealignment
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant BurninSubtitleAlignment::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
BurninSubtitleAlignment::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 BurninSubtitleAlignment::NewFeature
is defined.
Specifically, when burninsubtitlealignment
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on BurninSubtitleAlignment::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. Specify the alignment of your captions. If no explicit x_position is provided, setting alignment to centered will placethe captions at the bottom center of the output. Similarly, setting a left alignment willalign captions to the bottom left of the output. If x and y positions are given in conjunction with the alignment parameter, the font will be justified (either left or centered) relative to those coordinates.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Auto
Centered
Left
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl BurninSubtitleAlignment
impl BurninSubtitleAlignment
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for BurninSubtitleAlignment
impl AsRef<str> for BurninSubtitleAlignment
source§impl Clone for BurninSubtitleAlignment
impl Clone for BurninSubtitleAlignment
source§fn clone(&self) -> BurninSubtitleAlignment
fn clone(&self) -> BurninSubtitleAlignment
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for BurninSubtitleAlignment
impl Debug for BurninSubtitleAlignment
source§impl Display for BurninSubtitleAlignment
impl Display for BurninSubtitleAlignment
source§impl From<&str> for BurninSubtitleAlignment
impl From<&str> for BurninSubtitleAlignment
source§impl FromStr for BurninSubtitleAlignment
impl FromStr for BurninSubtitleAlignment
source§impl Hash for BurninSubtitleAlignment
impl Hash for BurninSubtitleAlignment
source§impl Ord for BurninSubtitleAlignment
impl Ord for BurninSubtitleAlignment
source§fn cmp(&self, other: &BurninSubtitleAlignment) -> Ordering
fn cmp(&self, other: &BurninSubtitleAlignment) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for BurninSubtitleAlignment
impl PartialEq for BurninSubtitleAlignment
source§fn eq(&self, other: &BurninSubtitleAlignment) -> bool
fn eq(&self, other: &BurninSubtitleAlignment) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for BurninSubtitleAlignment
impl PartialOrd for BurninSubtitleAlignment
source§fn partial_cmp(&self, other: &BurninSubtitleAlignment) -> Option<Ordering>
fn partial_cmp(&self, other: &BurninSubtitleAlignment) -> 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 BurninSubtitleAlignment
impl StructuralPartialEq for BurninSubtitleAlignment
Auto Trait Implementations§
impl Freeze for BurninSubtitleAlignment
impl RefUnwindSafe for BurninSubtitleAlignment
impl Send for BurninSubtitleAlignment
impl Sync for BurninSubtitleAlignment
impl Unpin for BurninSubtitleAlignment
impl UnwindSafe for BurninSubtitleAlignment
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> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more