Trait orml_traits::currency::MultiCurrencyExtended [−][src]
Extended MultiCurrency
with additional helper types and methods.
Associated Types
type Amount: Signed + TryInto<Self::Balance> + TryFrom<Self::Balance> + SimpleArithmetic + Codec + Copy + MaybeSerializeDeserialize + Debug + Default
[src]
The type for balance related operations, typically signed int.
Required methods
fn update_balance(
currency_id: Self::CurrencyId,
who: &AccountId,
by_amount: Self::Amount
) -> DispatchResult
[src]
currency_id: Self::CurrencyId,
who: &AccountId,
by_amount: Self::Amount
) -> DispatchResult
Add or remove abs(by_amount
) from the balance of who
under
currency_id
. If positive by_amount
, do add, else do remove.