Trait sp_runtime::traits::StaticLookup
source · pub trait StaticLookup {
type Source: Codec + Clone + PartialEq + Debug + TypeInfo;
type Target;
fn lookup(s: Self::Source) -> Result<Self::Target, LookupError>;
fn unlookup(t: Self::Target) -> Self::Source;
}
Expand description
Means of changing one type into another in a manner dependent on the source type.
This variant is different to Lookup
in that it doesn’t (can cannot) require any
context.
Required Associated Types
Required Methods
Implementations on Foreign Types
sourceimpl<A, B> StaticLookup for (A, B)where
A: StaticLookup,
B: StaticLookup<Source = A::Source, Target = A::Target>,
impl<A, B> StaticLookup for (A, B)where
A: StaticLookup,
B: StaticLookup<Source = A::Source, Target = A::Target>,
Perform a StaticLookup where there are multiple lookup sources of the same type.