Method mining

code/chapter09/blockchain/blockchain7/core/src/mine.rs:21–31

(&mut self, txs: &mut Vec<Transaction>)

    }

    pub fn mining(&mut self, txs: &mut Vec<Transaction>) {
        // 准备 pre_hash 和难度值
        let pre_hash = self.blockchain.curr_hash.clone();
        let bits = self.blockchain.curr_bits.clone();

        // 核心代码点：开始挖矿
        let block = self.miner.mine_block(txs, pre_hash, bits);

        // 区块保存
        self.blockchain.add_block(block);
    }
}