pub fn balance_increase<S>(
    storage: &mut S,
    contract: &ContractId,
    asset_id: &AssetId,
    amount: Word
) -> IoResult<(Word, bool), S::Error>where
    S: ContractsAssetsStorage + ?Sized,
Expand description

Increase the asset balance for a contract. Returns new balance, and a boolean indicating if a new entry was created.