Enum icu::pattern::DoublePlaceholderKey

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pub enum DoublePlaceholderKey {
    Place0,
    Place1,
}
Expand description

A two-value enum for the DoublePlaceholder pattern backend.

§Examples

use core::cmp::Ordering;
use core::str::FromStr;
use icu_pattern::DoublePlaceholderKey;
use icu_pattern::DoublePlaceholderPattern;
use icu_pattern::PatternItem;

// Parse the string syntax
let pattern =
    DoublePlaceholderPattern::try_from_str("Hello, {0} and {1}!", Default::default()).unwrap();

assert_eq!(
    pattern.iter().cmp(
        [
            PatternItem::Literal("Hello, "),
            PatternItem::Placeholder(DoublePlaceholderKey::Place0),
            PatternItem::Literal(" and "),
            PatternItem::Placeholder(DoublePlaceholderKey::Place1),
            PatternItem::Literal("!")
        ]
        .into_iter()
    ),
    Ordering::Equal
);

Variants§

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Place0

The placeholder {0}.

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Place1

The placeholder {1}.

Trait Implementations§

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impl Clone for DoublePlaceholderKey

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fn clone(&self) -> DoublePlaceholderKey

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for DoublePlaceholderKey

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for DoublePlaceholderKey

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fn deserialize<__D>( __deserializer: __D, ) -> Result<DoublePlaceholderKey, <__D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl FromStr for DoublePlaceholderKey

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type Err = PatternError

The associated error which can be returned from parsing.
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fn from_str( s: &str, ) -> Result<DoublePlaceholderKey, <DoublePlaceholderKey as FromStr>::Err>

Parses a string s to return a value of this type. Read more
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impl Ord for DoublePlaceholderKey

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fn cmp(&self, other: &DoublePlaceholderKey) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 · source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for DoublePlaceholderKey

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fn eq(&self, other: &DoublePlaceholderKey) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for DoublePlaceholderKey

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fn partial_cmp(&self, other: &DoublePlaceholderKey) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<W> PlaceholderValueProvider<DoublePlaceholderKey> for [W; 2]
where W: Writeable,

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type Error = Infallible

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type W<'a> = WriteableAsTryWriteableInfallible<&'a W> where W: 'a

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const LITERAL_PART: Part = crate::PATTERN_LITERAL_PART

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fn value_for( &self, key: DoublePlaceholderKey, ) -> (<[W; 2] as PlaceholderValueProvider<DoublePlaceholderKey>>::W<'_>, Part)

Returns the TryWriteable to substitute for the given placeholder and the Part representing it.
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impl<W0, W1> PlaceholderValueProvider<DoublePlaceholderKey> for (W0, W1)
where W0: Writeable, W1: Writeable,

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type Error = Infallible

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type W<'a> = WriteableAsTryWriteableInfallible<Either<&'a W0, &'a W1>> where W0: 'a, W1: 'a

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const LITERAL_PART: Part = crate::PATTERN_LITERAL_PART

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fn value_for( &self, key: DoublePlaceholderKey, ) -> (<(W0, W1) as PlaceholderValueProvider<DoublePlaceholderKey>>::W<'_>, Part)

Returns the TryWriteable to substitute for the given placeholder and the Part representing it.
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impl Serialize for DoublePlaceholderKey

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fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Copy for DoublePlaceholderKey

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impl Eq for DoublePlaceholderKey

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impl StructuralPartialEq for DoublePlaceholderKey

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> GetField<T> for T
where T: Copy,

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fn get_field(&self) -> T

Returns the value of this trait’s field T.
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts 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 more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts 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
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impl<T> Serialize for T
where T: Serialize + ?Sized,

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fn erased_serialize(&self, serializer: &mut dyn Serializer) -> Result<Ok, Error>

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T
where T: Send + Sync,