Web3.0（也称为分布式Web或互联网3.0）是互联网的下一代进化，它是Web2.0的升级版。Web3.0被认为是***技术和智能合约的融合，能够使得互联网更加去中心化、透明、安全和可靠。在编写智能合约时，你需要确保它具有清晰的架构，包括定义状态案例I8I流程**259I開发技术3365过程变量，并编写与之相关的函数。
尽管后端逻辑需要**者完成智能合约代码，并把它部署在区块上，但是在前端，**者还是使用标准的网络技术，比如HTML和jascript，因此**者可以使用自己熟悉的工具，库和框架。客户端的UI通常通过Web3.js和Ether.js与智能合约交互。像是对信息进行签名并且发送给智能合约这些操作，通常是通过浏览器的Web3钱包metaMask完成。
Since node 10.0.0,there is support for async iterators and the related for-await-of loop.These come in handy when the actual values we iterate over,and the end state of the iteration,are not known by the time the iterator method returns–mostly when working with streams.Aside from streams,there are not a lot of constructs that have the async iterator implemented natively,so we’ll cover them in another post.
})
.then(response=>{
console.log(response)
//login successful if there's a id in the response
if(response.id){
//store user details in local storage to keep user logged in between page refreshes
localStorage.setItem('user',JSON.stringify(response));
dispatch(success(response));
dispatch(alertActions.clear());
history.push('/');
}else{
dispatch(failure(response.message));
dispatch(alertActions.error(response.message));
//dispatch(logout());
}
"json":this.apiJson
};
let tasksForDate=[];
return rp(options)
.then(tasks=>{
tasks.data.forEach(task=>{
if(task.custom_fields[this.taskDay].indexOf(date.format("dddd"))!==-1||
task.custom_fields[this.taskMonth].indexOf(date.format("MMMM"))!==-1&&
task.custom_fields[this.taskDate]===date.format("D")){
tasksForDate.push(task);
}
});
this.handleSuccess(`Processing${tasksForDate.length}/${tasks.data.length}tasks`);
return tasksForDate;
})
.catch(err=>this.handleError(err));
}