Struct JsOption

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#[repr(transparent)]
pub struct JsOption<T = JsValue> {
    pub obj: JsValue,
    pub generics: PhantomData<fn() -> T>,
}

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§obj: JsValue§generics: PhantomData<fn() -> T>

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pub fn unwrap_or_else<F>(self, f: F) -> T
where F: FnOnce() -> T,

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impl<T> AsRef<JsValue> for JsOption<T>

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fn as_ref(&self) -> &JsValue

Converts this type into a shared reference of the (usually inferred) input type.

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impl<T> BatchableResult for JsOption<T>

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fn try_placeholder(batch: &mut Runtime) -> Option<JsOption<T>>

Returns Some(placeholder) for opaque types that can be batched, None for types that require flushing to get the actual value. Read more

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impl<T> BinaryDecode for JsOption<T>

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fn decode(decoder: &mut DecodedData<'_>) -> Result<JsOption<T>, DecodeError>

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impl<T> BinaryEncode for JsOption<T>

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fn encode(self, encoder: &mut EncodedData)

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

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fn clone(&self) -> JsOption<T>

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

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impl<T> Debug for JsOption<T>
where T: JsGeneric + Debug,

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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<T> Default for JsOption<T>
where T: JsGeneric,

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fn default() -> JsOption<T>

Returns the “default value” for a type. Read more

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impl<T> Deref for JsOption<T>
where T: JsGeneric,

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type Target = T

The resulting type after dereferencing.

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fn deref(&self) -> &T

Dereferences the value.

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impl<T> Display for JsOption<T>
where T: JsGeneric + Display,

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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<T> EncodeTypeDef for JsOption<T>

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fn encode_type_def(buf: &mut Vec<u8>)

Encode this type’s definition into the buffer. For primitives, this is just the TypeTag byte. For callbacks, this includes param count, param types, and return type.

Struct JsOption Copy item path

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impl<T> JsOption<T>where T: JsGeneric,

pub fn new() -> JsOption<T>

pub fn wrap(val: T) -> JsOption<T>

pub fn from_option(opt: Option<T>) -> JsOption<T>

pub fn is_empty(&self) -> bool

pub fn as_option(&self) -> Option<T>

pub fn into_option(self) -> Option<T>

pub fn unwrap(self) -> T

pub fn expect(self, msg: &str) -> T

pub fn unwrap_or_default(self) -> Twhere T: Default,

pub fn unwrap_or_else<F>(self, f: F) -> Twhere F: FnOnce() -> T,

Trait Implementations§

impl<T> AsRef<JsValue> for JsOption<T>

fn as_ref(&self) -> &JsValue

impl<T> BatchableResult for JsOption<T>

fn try_placeholder(batch: &mut Runtime) -> Option<JsOption<T>>

impl<T> BinaryDecode for JsOption<T>

fn decode(decoder: &mut DecodedData<'_>) -> Result<JsOption<T>, DecodeError>

impl<T> BinaryEncode for JsOption<T>

fn encode(self, encoder: &mut EncodedData)

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

fn clone(&self) -> JsOption<T>

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

impl<T> Debug for JsOption<T>where T: JsGeneric + Debug,

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

impl<T> Default for JsOption<T>where T: JsGeneric,

fn default() -> JsOption<T>

impl<T> Deref for JsOption<T>where T: JsGeneric,

type Target = T

fn deref(&self) -> &T

impl<T> Display for JsOption<T>where T: JsGeneric + Display,

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

impl<T> EncodeTypeDef for JsOption<T>

fn encode_type_def(buf: &mut Vec<u8>)

impl<T> ErasableGeneric for JsOption<T>

type Repr = JsValue

impl<T> From<JsOption<T>> for JsValue

fn from(value: JsOption<T>) -> JsValue

impl<T> From<JsValue> for JsOption<T>

fn from(obj: JsValue) -> JsOption<T>

impl<T> IntoJsGeneric for JsOption<T>where T: JsGeneric,

type JsCanon = JsOption<T>

fn to_js(self) -> JsOption<T>

impl<T> JsCast for JsOption<T>where T: JsGeneric,

fn instanceof(value: &JsValue) -> bool

fn unchecked_from_js(value: JsValue) -> JsOption<T>

fn unchecked_from_js_ref(value: &JsValue) -> &JsOption<T>

fn is_type_of(val: &JsValue) -> bool

fn has_type<T>(&self) -> boolwhere T: JsCast,

fn dyn_into<T>(self) -> Result<T, Self>where T: JsCast,

fn dyn_ref<T>(&self) -> Option<&T>where T: JsCast,

fn is_instance_of<T>(&self) -> boolwhere T: JsCast,

fn unchecked_into<T>(self) -> Twhere T: JsCast,

fn unchecked_ref<T>(&self) -> &Twhere T: JsCast,

impl<T> PartialEq for JsOption<T>where T: PartialEq,

fn eq(&self, other: &JsOption<T>) -> bool

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

impl<T> StructuralPartialEq for JsOption<T>

impl<T> UpcastFrom<()> for JsOption<T>

impl<T1, Target1> UpcastFrom<(T1,)> for JsOption<(Target1,)>where T1: JsGeneric, Target1: JsGeneric + UpcastFrom<T1>,

impl<T1, T2, Target1, Target2> UpcastFrom<(T1, T2)> for JsOption<(Target1, Target2)>where T1: JsGeneric, T2: JsGeneric, Target1: JsGeneric + UpcastFrom<T1>, Target2: JsGeneric + UpcastFrom<T2>,

impl<T1, T2, T3, Target1, Target2, Target3> UpcastFrom<(T1, T2, T3)> for JsOption<(Target1, Target2, Target3)>where T1: JsGeneric, T2: JsGeneric, T3: JsGeneric, Target1: JsGeneric + UpcastFrom<T1>, Target2: JsGeneric + UpcastFrom<T2>, Target3: JsGeneric + UpcastFrom<T3>,

impl UpcastFrom<AggregateError> for JsOption<JsValue>

impl UpcastFrom<AggregateError> for JsOption<AggregateError>

impl UpcastFrom<AggregateError> for JsOption<Error>

impl UpcastFrom<AggregateError> for JsOption<Object>

impl<T> UpcastFrom<Array<T>> for JsOption<JsValue>

impl<T, __WryUpcastTarget0> UpcastFrom<Array<T>> for JsOption<Array<__WryUpcastTarget0>>where __WryUpcastTarget0: UpcastFrom<T>,

impl<T> UpcastFrom<Array<T>> for JsOption<Object>

impl UpcastFrom<ArrayBuffer> for JsOption<JsValue>

impl UpcastFrom<ArrayBuffer> for JsOption<ArrayBuffer>

impl UpcastFrom<ArrayBuffer> for JsOption<Object>

impl UpcastFrom<ArrayBufferOptions> for JsOption<JsValue>

impl UpcastFrom<ArrayBufferOptions> for JsOption<ArrayBufferOptions>

impl UpcastFrom<ArrayBufferOptions> for JsOption<Object>

impl<T1, Target> UpcastFrom<ArrayTuple<(T1,)>> for JsOption<Array<Target>>where Target: UpcastFrom<T1>,

impl<T1, T2, Target> UpcastFrom<ArrayTuple<(T1, T2)>> for JsOption<Array<Target>>where Target: UpcastFrom<T1> + UpcastFrom<T2>,

Struct JsOption

impl<T> JsOption<T>
where T: JsGeneric,

pub fn unwrap_or_default(self) -> T
where T: Default,

pub fn unwrap_or_else<F>(self, f: F) -> T
where F: FnOnce() -> T,

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

impl<T> Debug for JsOption<T>
where T: JsGeneric + Debug,

impl<T> Default for JsOption<T>
where T: JsGeneric,

impl<T> Deref for JsOption<T>
where T: JsGeneric,

impl<T> Display for JsOption<T>
where T: JsGeneric + Display,

impl<T> IntoJsGeneric for JsOption<T>
where T: JsGeneric,

impl<T> JsCast for JsOption<T>
where T: JsGeneric,

fn has_type<T>(&self) -> bool
where T: JsCast,

fn dyn_into<T>(self) -> Result<T, Self>
where T: JsCast,

fn dyn_ref<T>(&self) -> Option<&T>
where T: JsCast,

fn is_instance_of<T>(&self) -> bool
where T: JsCast,

fn unchecked_into<T>(self) -> T
where T: JsCast,

fn unchecked_ref<T>(&self) -> &T
where T: JsCast,

impl<T> PartialEq for JsOption<T>
where T: PartialEq,

impl<T1, Target1> UpcastFrom<(T1,)> for JsOption<(Target1,)>
where T1: JsGeneric, Target1: JsGeneric + UpcastFrom<T1>,

impl<T1, T2, Target1, Target2> UpcastFrom<(T1, T2)> for JsOption<(Target1, Target2)>
where T1: JsGeneric, T2: JsGeneric, Target1: JsGeneric + UpcastFrom<T1>, Target2: JsGeneric + UpcastFrom<T2>,

impl<T1, T2, T3, Target1, Target2, Target3> UpcastFrom<(T1, T2, T3)> for JsOption<(Target1, Target2, Target3)>
where T1: JsGeneric, T2: JsGeneric, T3: JsGeneric, Target1: JsGeneric + UpcastFrom<T1>, Target2: JsGeneric + UpcastFrom<T2>, Target3: JsGeneric + UpcastFrom<T3>,

impl<T, WryUpcastTarget0> UpcastFrom<Array<T>> for JsOption<Array<WryUpcastTarget0>>
where __WryUpcastTarget0: UpcastFrom<T>,

impl<T1, Target> UpcastFrom<ArrayTuple<(T1,)>> for JsOption<Array<Target>>
where Target: UpcastFrom<T1>,

impl<T1, T2, Target> UpcastFrom<ArrayTuple<(T1, T2)>> for JsOption<Array<Target>>
where Target: UpcastFrom<T1> + UpcastFrom<T2>,

impl<T1, T2, T3, Target> UpcastFrom<ArrayTuple<(T1, T2, T3)>> for JsOption<Array<Target>>
where Target: UpcastFrom<T1> + UpcastFrom<T2> + UpcastFrom<T3>,

impl<T1, T2, T3, T4, Target> UpcastFrom<ArrayTuple<(T1, T2, T3, T4)>> for JsOption<Array<Target>>
where Target: UpcastFrom<T1> + UpcastFrom<T2> + UpcastFrom<T3> + UpcastFrom<T4>,

impl<T1, T2, T3, T4, T5, Target> UpcastFrom<ArrayTuple<(T1, T2, T3, T4, T5)>> for JsOption<Array<Target>>
where Target: UpcastFrom<T1> + UpcastFrom<T2> + UpcastFrom<T3> + UpcastFrom<T4> + UpcastFrom<T5>,

impl<T1, T2, T3, T4, T5, T6, Target> UpcastFrom<ArrayTuple<(T1, T2, T3, T4, T5, T6)>> for JsOption<Array<Target>>
where Target: UpcastFrom<T1> + UpcastFrom<T2> + UpcastFrom<T3> + UpcastFrom<T4> + UpcastFrom<T5> + UpcastFrom<T6>,

impl<T1, T2, T3, T4, T5, T6, T7, Target> UpcastFrom<ArrayTuple<(T1, T2, T3, T4, T5, T6, T7)>> for JsOption<Array<Target>>
where Target: UpcastFrom<T1> + UpcastFrom<T2> + UpcastFrom<T3> + UpcastFrom<T4> + UpcastFrom<T5> + UpcastFrom<T6> + UpcastFrom<T7>,

impl<T1, T2, T3, T4, T5, T6, T7, T8, Target> UpcastFrom<ArrayTuple<(T1, T2, T3, T4, T5, T6, T7, T8)>> for JsOption<Array<Target>>
where Target: UpcastFrom<T1> + UpcastFrom<T2> + UpcastFrom<T3> + UpcastFrom<T4> + UpcastFrom<T5> + UpcastFrom<T6> + UpcastFrom<T7> + UpcastFrom<T8>,

impl<T, WryUpcastTarget0> UpcastFrom<AsyncGenerator<T>> for JsOption<AsyncGenerator<WryUpcastTarget0>>
where __WryUpcastTarget0: UpcastFrom<T>,

impl<T, WryUpcastTarget0> UpcastFrom<AsyncIterator<T>> for JsOption<AsyncIterator<WryUpcastTarget0>>
where __WryUpcastTarget0: UpcastFrom<T>,