Trait Bank

pub trait Bank<K> {
    type Num;

    // Required methods
    fn record_transferred_in_by_token<Q: Borrow<K> + ?Sized>(
        &mut self,
        token: &Q,
        amount: &Self::Num,
    ) -> Result<()>;
    fn record_transferred_out_by_token<Q: Borrow<K> + ?Sized>(
        &mut self,
        token: &Q,
        amount: &Self::Num,
    ) -> Result<()>;
    fn balance<Q: Borrow<K> + ?Sized>(&self, token: &Q) -> Result<Self::Num>;

    // Provided method
    fn balance_excluding<Q: Borrow<K> + ?Sized>(
        &self,
        token: &Q,
        excluded: &Self::Num,
    ) -> Result<Self::Num>
       where Self::Num: CheckedSub + Zero { ... }
}

A bank of tokens.

Required Associated Types

type Num

Number type.

Required Methods

fn record_transferred_in_by_token<Q: Borrow<K> + ?Sized>( &mut self, token: &Q, amount: &Self::Num, ) -> Result<()>

Record transferred in amount by token.

fn record_transferred_out_by_token<Q: Borrow<K> + ?Sized>( &mut self, token: &Q, amount: &Self::Num, ) -> Result<()>

Record transferred out amount by token.

fn balance<Q: Borrow<K> + ?Sized>(&self, token: &Q) -> Result<Self::Num>

Get the balance of the given token.

Provided Methods

fn balance_excluding<Q: Borrow<K> + ?Sized>( &self, token: &Q, excluded: &Self::Num, ) -> Result<Self::Num>

where Self::Num: CheckedSub + Zero,

Get the balance of the given token excluding excluded amount.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors