EOSIO.DCT 1.3以上版本工具編寫EOS智能合約重大更新

1, 注意使用eosio.cdt 1.3及以上版本工具, c11語法

定義table, "bankerlist" 是表名, 生成abi文件使用

struct [[eosio::table("bankerlist")]] bankerlist {
		uint64_t issue;
		uint64_t roomid;
		uint64_t stop;			
		uint64_t gameover;		
		uint64_t total_amount;	
		mutable std::vector<betinfo> betinfoList;
		uint64_t primary_key() const { return issue; }
		EOSLIB_SERIALIZE(bankerlist, (issue)(roomid)(stop)(gameover)(total_amount)(betinfoList));
    };

typedef eosio::multi_index<"bankerlist"_n, bankerlist> BANKER_LIST;

定義action

[[eosio::action]]
	void gamestart() {		
		BANKER_LIST banker_list(_self, _self.value);
		auto it = banker_list.find(1);
		eosio_assert(it->gameover != 1, "status err");
		banker_list.modify(it, _self, [&](auto &formerInfo) {
			formerInfo.gameover = 1;
		});
	}

使用table

BANKER_LIST banker_list(_self, _self.value);
		auto b_it = banker_list.find(1);

入口宏

取消了, EOSIO_ABI 採用EOSIO_DISPATCH_HELPER代替

extern "C" {																					
	void apply(uint64_t receiver, uint64_t code, uint64_t action) {								
		auto self = receiver;                                         							
        if(code == self || code == "eosio.token"_n.value) {										
           if(action == "transfer"_n.value){													
              eosio_assert(code == "eosio.token"_n.value, "Must transfer EOS");					
           }                                                              						
           switch(action) {                                                 					
			   EOSIO_DISPATCH_HELPER(xxxxclassname, (transfer)(stopgame)(gamestart)(clear)(resolvebet))
           }                                                                					
        }       																				
	}																							
}	

重要的類型名變化,

account_name => name

N(x)   =>  _n

N(x)  可以引入 <eosiolib/name.hpp>, #define N(X) name(#X), 以減少代碼更改

S(EOS,4) => symbol(symbol_code("EOS"), 4)

 

更多更新相關資料

智能合約之 eosio.cdt 我們需要知道的那些事    非常值得一看

https://blog.csdn.net/bnbjin/article/details/84027200 eosio.cdt心得

https://developers.eos.io/eosio-home/docs/  官方案例, 合約編寫案例, api文檔