Method get_balance_by_block

web3/src/account.rs:52–63

Retrieve the eth balance for an accout at a given block. See https://eth.wiki/json-rpc/API#eth_getBalance # Examples ```ignore use types::block::BlockNumber; let block = BlockNumber(0.into()); let account = web3.get_all_accounts().await.unwrap()[0]; let balance = web3.get_balance_by_block(account, Some(block)).await; assert!(balance.is_ok()); ```

(
        &self,
        address: Account,
        block_number: Option<BlockNumber>,
    )

    /// assert!(balance.is_ok());
    /// ```
    pub async fn get_balance_by_block(
        &self,
        address: Account,
        block_number: Option<BlockNumber>,
    ) -> Result<U256> {
        let block_number = Web3::get_hex_blocknumber(block_number);
        let params = rpc_params![to_hex(address), block_number];
        let response = self.send_rpc("eth_getBalanceByBlock", params).await?;
        let balance: U256 = serde_json::from_value(response)?;

        Ok(balance)
    }

    pub fn sign_transaction(
        &self,