Struct state_objects::UIntMap

pub struct UIntMap<K, V: UInt> { /* private fields */ }

A map from keys to 128-bit unsigned integers.

Implementations

impl<'a, K: ObjectKey, V: UInt> UIntMap<K, V>

pub fn get(&self, ctx: &Context<'_>, key: K::Value<'_>) -> Response<'_, u128>

Gets the current value for the given key, defaulting always to 0.

pub fn add( &self, ctx: &mut Context<'_>, key: K::Value<'_>, value: u128, ) -> Response<'_, u128>

Adds the given value to the current value for the given key.

pub fn safe_sub( &self, ctx: &mut Context<'_>, key: K::Value<'_>, value: u128, ) -> Response<'_, u128>

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