Struct PodSlotHashes

pub struct PodSlotHashes { /* private fields */ }

API for querying of the SlotHashes sysvar by on-chain programs.

Hangs onto the allocated raw buffer from the account data, which can be queried or accessed directly as a slice of PodSlotHash.

Implementations

impl PodSlotHashes

pub fn fetch() -> Result<PodSlotHashes, ProgramError>

Fetch all of the raw sysvar data using the sol_get_sysvar syscall.

pub fn as_slice(&self) -> Result<&[PodSlotHash], ProgramError>

Return the SlotHashes sysvar data as a slice of PodSlotHash. Returns a slice of only the initialized sysvar data.

pub fn get(&self, slot: &u64) -> Result<Option<Hash>, ProgramError>

Given a slot, get its corresponding hash in the SlotHashes sysvar data. Returns None if the slot is not found.

pub fn position(&self, slot: &u64) -> Result<Option<usize>, ProgramError>

Given a slot, get its position in the SlotHashes sysvar data. Returns None if the slot is not found.

Trait Implementations

impl Default for PodSlotHashes

fn default() -> PodSlotHashes

Returns the “default value” for a type.