pub struct Empty {}
Expand description
An empty struct that serves as a placeholder in different places, such as contracts that don’t set a custom message.
It is designed to be expressable in correct JSON and JSON Schema but contains no meaningful data. Previously we used enums without cases, but those cannot represented as valid JSON Schema (https://github.com/CosmWasm/cosmwasm/issues/451)
Trait Implementations§
source§impl<'de> Deserialize<'de> for Empty
impl<'de> Deserialize<'de> for Empty
source§fn deserialize<__D>(
__deserializer: __D
) -> Result<Empty, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>( __deserializer: __D ) -> Result<Empty, <__D as Deserializer<'de>>::Error>where __D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
source§impl FadromaDeserialize for Empty
impl FadromaDeserialize for Empty
source§fn from_bytes(_de: &mut Deserializer<'_>) -> Result<Self>
fn from_bytes(_de: &mut Deserializer<'_>) -> Result<Self>
Deserialize into a new instance by reading bytes from
the provided
Deserializer
.source§impl FadromaSerialize for Empty
impl FadromaSerialize for Empty
source§fn size_hint(&self) -> usize
fn size_hint(&self) -> usize
The size in bytes of the particular instance when
converted to its byte respresentation. While it’s
preferred that this method returns an exact size
(or at least a bigger estimation) it’s not an error
to return an incorrect number. The penalty for doing
so is potentially incurring unnecessary re-allocations.
source§fn to_bytes(&self, _ser: &mut Serializer) -> Result<()>
fn to_bytes(&self, _ser: &mut Serializer) -> Result<()>
Serialize the instance into bytes by writing to
the provided
Serializer
.source§impl JsonSchema for Empty
impl JsonSchema for Empty
source§fn schema_name() -> String
fn schema_name() -> String
The name of the generated JSON Schema. Read more
source§fn json_schema(gen: &mut SchemaGenerator) -> Schema
fn json_schema(gen: &mut SchemaGenerator) -> Schema
Generates a JSON Schema for this type. Read more
source§fn is_referenceable() -> bool
fn is_referenceable() -> bool
Whether JSON Schemas generated for this type should be re-used where possible using the
$ref
keyword. Read moresource§impl PartialEq<Empty> for Empty
impl PartialEq<Empty> for Empty
source§impl Serialize for Empty
impl Serialize for Empty
source§fn serialize<__S>(
&self,
__serializer: __S
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
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
impl CustomMsg for Empty
impl CustomQuery for Empty
impl Eq for Empty
impl StructuralEq for Empty
impl StructuralPartialEq for Empty
Auto Trait Implementations§
impl RefUnwindSafe for Empty
impl Send for Empty
impl Sync for Empty
impl Unpin for Empty
impl UnwindSafe for Empty
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
Mutably borrows from an owned value. Read more