Intro to the DataStream API What can be Streamed? Java tuples and POJOs Tuples POJOs Scala tuples and case classes A Complete Example Stream execution environment Basic strea...

Intro to the DataStream API What can be Streamed? Java tuples and POJOs Tuples POJOs Scala tuples and case classes A Complete Example Stream execution environment Basic strea...

Intro to the DataStream API What can be Streamed? Java tuples and POJOs Tuples POJOs Scala tuples and case classes A Complete Example Stream execution environment Basic strea...

强制转换方法为函数 接收函数作为参数的函数 返回函数的函数 高阶函数是指使用其他函数作为参数、或者返回一个函数作为结果的函数。在Scala中函数是“一等公民”，所以允许定义高阶函数。这里的术语可能有点让人困惑，我们约定，使用函数值作为参数，或者返回值为函数值的“函数”和“方法”，均称之为“高阶函数”。 最常见的一个例子是Scala集合类（colle...

概览 Scala API Extensions Java Lambda 表达式

概览 Scala API Extensions Java Lambda 表达式

User-defined Functions Overview Implementation Guide Function Class Evaluation Methods Type Inference Automatic Type Inference Custom Type Inference Determinism Runtime Inte...

Overview Scala API Extensions Java Lambda Expressions

Overview Execution Mode (Batch/Streaming) Event Time State & Fault Tolerance User-Defined Functions Operators Data Sources Side Outputs Handling Application Parameters Tes...

Overview Execution Mode (Batch/Streaming) Event Time State & Fault Tolerance User-Defined Functions Operators Data Sources Side Outputs Handling Application Parameters Tes...