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

Singleton effectively combines PrefixedStorage with TypedStorage to work on a single storage key. It performs the to_length_prefixed transformation on the given name to ensure no collisions, and then provides the standard TypedStorage accessors, without requiring a key (which is defined in the constructor)

StorageTransaction

TypedStorage

Functions

bucket

bucket_read

currval

currval returns the last value returned by nextval. If the sequence has never been used, then it will return 0.

nextval

nextval increments the counter by 1 and returns the new value. On the first time it is called (no sequence info in db) it will return 1.

prefixed

prefixed_read

sequence

Sequence creates a custom Singleton to hold an empty sequence

singleton

singleton_read

to_length_prefixed

Calculates the raw key prefix for a given namespace as documented in https://github.com/webmaster128/key-namespacing#length-prefixed-keys

to_length_prefixed_nested

Calculates the raw key prefix for a given nested namespace as documented in https://github.com/webmaster128/key-namespacing#nesting

transactional

typed

typed_read

Crate secret_cosmwasm_storage

Structs

Functions