#[non_exhaustive]pub enum S3ConnectorOperator {
Show 21 variants
Addition,
Between,
Division,
EqualTo,
GreaterThan,
GreaterThanOrEqualTo,
LessThan,
LessThanOrEqualTo,
MaskAll,
MaskFirstN,
MaskLastN,
Multiplication,
NotEqualTo,
NoOp,
Projection,
Subtraction,
ValidateNonNegative,
ValidateNonNull,
ValidateNonZero,
ValidateNumeric,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against S3ConnectorOperator
, 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 s3connectoroperator = unimplemented!();
match s3connectoroperator {
S3ConnectorOperator::Addition => { /* ... */ },
S3ConnectorOperator::Between => { /* ... */ },
S3ConnectorOperator::Division => { /* ... */ },
S3ConnectorOperator::EqualTo => { /* ... */ },
S3ConnectorOperator::GreaterThan => { /* ... */ },
S3ConnectorOperator::GreaterThanOrEqualTo => { /* ... */ },
S3ConnectorOperator::LessThan => { /* ... */ },
S3ConnectorOperator::LessThanOrEqualTo => { /* ... */ },
S3ConnectorOperator::MaskAll => { /* ... */ },
S3ConnectorOperator::MaskFirstN => { /* ... */ },
S3ConnectorOperator::MaskLastN => { /* ... */ },
S3ConnectorOperator::Multiplication => { /* ... */ },
S3ConnectorOperator::NotEqualTo => { /* ... */ },
S3ConnectorOperator::NoOp => { /* ... */ },
S3ConnectorOperator::Projection => { /* ... */ },
S3ConnectorOperator::Subtraction => { /* ... */ },
S3ConnectorOperator::ValidateNonNegative => { /* ... */ },
S3ConnectorOperator::ValidateNonNull => { /* ... */ },
S3ConnectorOperator::ValidateNonZero => { /* ... */ },
S3ConnectorOperator::ValidateNumeric => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when s3connectoroperator
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant S3ConnectorOperator::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
S3ConnectorOperator::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 S3ConnectorOperator::NewFeature
is defined.
Specifically, when s3connectoroperator
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on S3ConnectorOperator::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
Addition
Between
Division
EqualTo
GreaterThan
GreaterThanOrEqualTo
LessThan
LessThanOrEqualTo
MaskAll
MaskFirstN
MaskLastN
Multiplication
NotEqualTo
NoOp
Projection
Subtraction
ValidateNonNegative
ValidateNonNull
ValidateNonZero
ValidateNumeric
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 S3ConnectorOperator
impl S3ConnectorOperator
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 S3ConnectorOperator
impl AsRef<str> for S3ConnectorOperator
source§impl Clone for S3ConnectorOperator
impl Clone for S3ConnectorOperator
source§fn clone(&self) -> S3ConnectorOperator
fn clone(&self) -> S3ConnectorOperator
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for S3ConnectorOperator
impl Debug for S3ConnectorOperator
source§impl Display for S3ConnectorOperator
impl Display for S3ConnectorOperator
source§impl From<&str> for S3ConnectorOperator
impl From<&str> for S3ConnectorOperator
source§impl FromStr for S3ConnectorOperator
impl FromStr for S3ConnectorOperator
source§impl Hash for S3ConnectorOperator
impl Hash for S3ConnectorOperator
source§impl Ord for S3ConnectorOperator
impl Ord for S3ConnectorOperator
source§fn cmp(&self, other: &S3ConnectorOperator) -> Ordering
fn cmp(&self, other: &S3ConnectorOperator) -> 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 S3ConnectorOperator
impl PartialEq for S3ConnectorOperator
source§fn eq(&self, other: &S3ConnectorOperator) -> bool
fn eq(&self, other: &S3ConnectorOperator) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for S3ConnectorOperator
impl PartialOrd for S3ConnectorOperator
source§fn partial_cmp(&self, other: &S3ConnectorOperator) -> Option<Ordering>
fn partial_cmp(&self, other: &S3ConnectorOperator) -> 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 S3ConnectorOperator
impl StructuralPartialEq for S3ConnectorOperator
Auto Trait Implementations§
impl Freeze for S3ConnectorOperator
impl RefUnwindSafe for S3ConnectorOperator
impl Send for S3ConnectorOperator
impl Sync for S3ConnectorOperator
impl Unpin for S3ConnectorOperator
impl UnwindSafe for S3ConnectorOperator
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