Function ink_env::set_contract_storage_return_size

source · [−]
pub fn set_contract_storage_return_size<V>(key: &Key, value: &V) -> Option<u32> where
    V: Encode, 
Expand description

Writes the value to the contract storage under the given key and returns the size of the pre-existing value at the specified key if any.

Compatibility

This function requires minimum substrate-contracts-node version v0.15.1, or any node built with Substrate version later than #7d233c2.

Panics

  • If the encode length of value exceeds the configured maximum value length of a storage entry.

Note

This is equivalent to the set_contract_storage method, but gives the information on the pre-existing value size.