Struct ReadonlySingleton

pub struct ReadonlySingleton<'a, T>
where
    T: Serialize + DeserializeOwned,
{ /* private fields */ }

👎Deprecated: The crate cosmwasm-storage is unmaintained and will be removed in CosmWasm 2.0. Please consider migrating to cw-storage-plus or simple cosmwasm-std storage calls.

ReadonlySingleton only requires a Storage and exposes only the methods of Singleton that don’t modify state.

Implementations

impl<'a, T> ReadonlySingleton<'a, T>

where T: Serialize + DeserializeOwned,

pub fn new(storage: &'a dyn Storage, key: &[u8]) -> Self

pub fn load(&self) -> StdResult<T>

load will return an error if no data is set at the given key, or on parse error

pub fn may_load(&self) -> StdResult<Option<T>>

may_load will parse the data stored at the key if present, returns Ok(None) if no data there. returns an error on issues parsing