Struct holochain_core::action::ActionWrapper

pub struct ActionWrapper { /* fields omitted */ }

Wrapper for actions that provides a unique ID The unique ID is needed for state tracking to ensure that we can differentiate between two Action dispatches containing the same value when doing "time travel debug". The standard approach is to drop the ActionWrapper into the key of a state history HashMap and use the convenience unwrap_to! macro to extract the action data in a reducer. All reducer functions must accept an ActionWrapper so all dispatchers take an ActionWrapper.

Methods

impl ActionWrapper

pub fn new(a: Action) -> Self

constructor from &Action internal snowflake ID is automatically set

pub fn action(&self) -> &Action

read only access to action

pub fn id(&self) -> &ProcessUniqueId

read only access to id

Trait Implementations

impl Clone for ActionWrapper

fn clone(&self) -> ActionWrapper

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Eq for ActionWrapper

impl PartialEq<ActionWrapper> for ActionWrapper

fn eq(&self, other: &ActionWrapper) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Hash for ActionWrapper

fn hash<H: Hasher>(&self, state: &mut H)

@TODO dangerous when persisted! snowflake only guarantees uniqueness per process @see https://github.com/holochain/holochain-rust/issues/203

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].

impl Debug for ActionWrapper

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

Formats the value using the given formatter.