Enum sc_rpc_spec_v2::chain_head::api::ListOrValue
source · pub enum ListOrValue<T> {
List(Vec<T>),
Value(T),
}
Expand description
RPC list or value wrapper.
For some RPCs it’s convenient to call them with either a single value or a whole list of values to get a proper response. In theory you could do a batch query, but it’s:
- Less convenient in client libraries
- If the response value is small, the protocol overhead might be dominant.
Also it’s nice to be able to maintain backward compatibility for methods that were initially taking a value and now we want to expand them to take a list.
Variants§
Implementations§
source§impl<T> ListOrValue<T>
impl<T> ListOrValue<T>
sourcepub fn map<F, X>(self, f: F) -> ListOrValue<X>where
F: Fn(T) -> X,
pub fn map<F, X>(self, f: F) -> ListOrValue<X>where
F: Fn(T) -> X,
Map every contained value using function F
.
This allows to easily convert all values in any of the variants.
Trait Implementations§
source§impl<T> Clone for ListOrValue<T>where
T: Clone,
impl<T> Clone for ListOrValue<T>where
T: Clone,
source§fn clone(&self) -> ListOrValue<T>
fn clone(&self) -> ListOrValue<T>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl<T> Debug for ListOrValue<T>where
T: Debug,
impl<T> Debug for ListOrValue<T>where
T: Debug,
source§impl<'de, T> Deserialize<'de> for ListOrValue<T>where
T: Deserialize<'de>,
impl<'de, T> Deserialize<'de> for ListOrValue<T>where
T: Deserialize<'de>,
source§fn deserialize<__D>(
__deserializer: __D
) -> Result<ListOrValue<T>, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D
) -> Result<ListOrValue<T>, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
source§impl<T> From<T> for ListOrValue<T>
impl<T> From<T> for ListOrValue<T>
source§fn from(n: T) -> ListOrValue<T>
fn from(n: T) -> ListOrValue<T>
Converts to this type from the input type.
source§impl<T> From<Vec<T>> for ListOrValue<T>
impl<T> From<Vec<T>> for ListOrValue<T>
source§fn from(n: Vec<T>) -> ListOrValue<T>
fn from(n: Vec<T>) -> ListOrValue<T>
Converts to this type from the input type.
source§impl<T> PartialEq for ListOrValue<T>where
T: PartialEq,
impl<T> PartialEq for ListOrValue<T>where
T: PartialEq,
source§fn eq(&self, other: &ListOrValue<T>) -> bool
fn eq(&self, other: &ListOrValue<T>) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.source§impl<T> Serialize for ListOrValue<T>where
T: Serialize,
impl<T> Serialize for ListOrValue<T>where
T: Serialize,
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<T> StructuralPartialEq for ListOrValue<T>
Auto Trait Implementations§
impl<T> RefUnwindSafe for ListOrValue<T>where
T: RefUnwindSafe,
impl<T> Send for ListOrValue<T>where
T: Send,
impl<T> Sync for ListOrValue<T>where
T: Sync,
impl<T> Unpin for ListOrValue<T>where
T: Unpin,
impl<T> UnwindSafe for ListOrValue<T>where
T: UnwindSafe,
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T: 'a,
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T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
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