贼简单的代码示例 for [i,j] in [range(3),range(3)]:print(i,j) 输出: ValueError: too many values to unpack (expected 2) 正确示例 for i,j in zip(range(3),range(3)):print(i,j) 输出: 0 0 1 1 2 2 原因:后面zip()包装了两个lis
在写引导页面时,出现Application windows are expected to have a root view controller at the end of application 的崩溃问题,只要添加一句 self.window.rootViewController=[[UIViewController alloc] init];即可
集群环境描述:HDFS集群处于HA模式下,同时启动了YARN\JN\KAFKA\ZK。 现象: FAILED: SemanticException Unable to determine if hdfs://s233/user/hive/warehouse/mydb.db/ext_calllogs_in_hbase is encrypted: java.lang.IllegalArgument
found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true
报错: Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'AService': Injection of resource dependencies failed; nested exception is org.springframework.be
Expected BEGIN_ARRAY but was STRING at line 1 column 41 path $.result.xxx 问题源头就是在转换工厂进行数据转换的时候出现错误, 这里是需要Array类型却捕捉到String,所以解析错误, 解析的BaseResponse.kt data class BaseResponse<T> (val code:String,va