Attribute Macro at_block 

#[at_block]

Generate query for the latest state for functions that query something at specified block.

Note

• the docs must be end with at specified block.
• the function name must be end with _at.
• the last argument must be Option<H256>.

Example

/// Imdocs at specified block.
#[at_block]
pub fn query_at(addr: Address, block_hash: Option<H256>) -> R {
    // ...
}

will generate functions

/// Imdocs at specified block.
pub fn query_at(addr: Address, block_hash: impl Into<Option<H256>>) -> R {
    // ...
}

/// Imdocs.
pub fn query(addr: Address) -> R {
    query_at(addr, None)
}