Struct Accumulator 

pub struct Accumulator { /* private fields */ }

A 128-bit unsigned integer accumulator.

Implementations

impl Accumulator

pub fn get<'a>(&self, ctx: &Context<'_>) -> Result<u128, ClientError<u8>>

Gets the current value, defaulting always to 0.

pub fn add<'a>( &self, ctx: &mut Context<'_>, value: u128, ) -> Result<u128, ClientError<u8>>

Adds the given value to the current value.

pub fn safe_sub<'a>( &self, ctx: &mut Context<'_>, value: u128, ) -> Result<u128, ClientError<SafeSubError>>

Subtracts the given value from the current value, returning an error if the subtraction would result in a negative value.

Trait Implementations

impl StateObjectResource for Accumulator

unsafe fn new( scope: &[u8], prefix: u8, ) -> Result<Accumulator, InitializationError>

Creates a new resource. This should only be called in generated code. Do not call this function directly.