1:EventHandler实际上就是一个特殊的委托,它是由.NET预定义好的一个委托,它的形式是固定的。 2:使用EventHandler时,处理函数的返回值必须是Void类型,而使用Deleagate则没有这个限制。 3:Delegate相当于一个函数的指针,用于绑定的函数返回值和参数列表要符合Delegate声明时的要求。 要是使用事件,处理函数的返回值必...
首先,定义一个委托类型,用于表示事件处理程序。在这个例子中,我们定义了一个名为MyEventHandler的委托类型,它接受两个整数参数并返回void。public delegate void MyEventHandler(int x, int y); 复制代码接下来,定义一个包含事件的类。在这个例子中,我们定义了一个名为MyEventPublisher的类,它包含一个名为MyEvent...
//下面定义事件处理类,注意这里用到了EventHandler<T>委托类型 public class HasEvent { // Declare an event of delegate type EventHandler of // MyEventArgs. public event EventHandler<MyEventArgs> SampleEvent; public void DemoEvent(string val) { //复制到临时变量,以确保线程安全 EventHandler<MyEventA...
deflambda_handler(event,context):print("Received event: "+json.dumps(event,indent=2))ec2=boto3.client('ec2')now=datetime.now()shanghai_tz=pytz.timezone('Asia/Shanghai')instance_id=event['detail']['instance-id']state=event['detail']['state']desc=""ifstate=='running':desc="启动"elif...
def lambda_handler(event, context): #从event中读取新建EMR集群的cluster id,名称及创建时间 cid=event['detail']['clusterId'] name=event['detail']['name'] timestamp=event['time'] #将对应信息写入DynamoDB dynamodb.put_item(TableName='emr-newcluster', ...
def lambda_handler(event, context): # TODO implement # Asg sent JSON package "event" print(event) #candidate instances asg sent RecomDelInsList = [] for Ins in event["Instances"]: RecomDelInsList.append(Ins["InstanceId"]) ...
Text += "nControl returned to Click event handler.n"; }; } async Task ExampleMethodAsync() { // The following line simulates a task-returning asynchronous process. await Task.Delay(1000); } } 带有标准查询运算符的 lambda 许多标准查询运算符都具有输入参数,其类型是泛型委托系列 Func<T,T...
def lambda_handler(event, context): for record in event['Records']: bucket = record['s3']['bucket']['name'] key = unquote_plus(record['s3']['object']['key']) tmpkey = key.replace('/', '') download_path = '/tmp/{}{}'.format(uuid.uuid4(), tmpkey) upload_path = '/tmp...
(e) def lambda_handler(event, context): print("About to execute `asyncio.run`...") asyncio.run(remote_script(notebook="<My_Notebook_instance>", cmd="""[ "stdin", "jupyter nbconvert --execute --to notebook --inplace /home/ec2-user/SageMaker/automated-nb.ipynb --ExecutePreprocessor....
def lambda_handler(event, context): message = event['Records'][0]['Sns'] # print("sns_message:", event) # 打印 sns_message 的内容 sns_message = json.loads(message['Message']) region = message['TopicArn'].split(':')[-3]