Struct ValueCounter

pub struct ValueCounter(/* private fields */);

Value counter with some predefined maximum value.

Implementations

impl ValueCounter

pub fn new(initial_amount: u128) -> Self

New limited value counter with initial value to spend.

pub fn reduce(&mut self, amount: u128) -> ChargeResult

Reduce value by amount.

Called when message is sent to another program, so the value amount is sent to receiving program.

pub fn left(&self) -> u128

Report how much value is left.

pub unsafe fn clone(&self) -> Self

Clone the counter

Safety

Use only when it’s absolutely necessary to clone the counter i.e atomic implementation of Ext.

Trait Implementations

impl Debug for ValueCounter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.