Struct Stack 

pub struct Stack { /* private fields */ }

A vector-based implementation of StorageStack, used for testing purpose.

Trait Implementations

impl Clone for Stack

fn clone(&self) -> Stack

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for Stack

fn default() -> Stack

Returns the “default value” for a type.

impl StorageStack for Stack

fn push<T>(&mut self, t: T) -> Result<(), Error>

where T: ArgumentEncoder,

Save a value to the end of stable memory.

fn pop<T>(&mut self) -> Result<T, Error>

where T: for<'de> ArgumentDecoder<'de>,

Pop a value from the end of stable memory. In case of OutOfBounds error, offset is not changed. In case of Candid decoding error, offset will be changed anyway.

fn new_with(&self, offset: Offset) -> Stack

Return a new StorageStack object with the given offset.

fn offset(&self) -> Offset

Return the current read/write offset.

fn seek_prev(&mut self) -> Result<(), Error>

Seek to the start of previous value by changing the offset. This is similar to pop but without reading the actual value.