pub fn derive_arb_header_info<E, F: Fn(Address, B256) -> Result<Option<U256>, E>>(
read_slot: &F,
coinbase: Address,
) -> Result<Option<ArbHeaderInfo>, E>Expand description
Derive ArbHeaderInfo from storage reads.
Returns Ok(None) when the ArbOS version slot is absent (pre-genesis state
that cannot be derived) and Err when a backing-store read fails.