Projection, Filtering, and Aggregation of Data Streams

Focusing on data manipulation operations, this course teaches how to perform data projection, filtering, and aggregation using Kotlin without needing advanced external libraries. You will learn how to use both procedural and functional programming techniques when applying filtering and aggregation on data streams.

Lessons and practices

Lesson 1: Understanding and Managing Data Streams with Kotlin

Retrieve Last Element from DataStream

Fixing the getLast Method in DataStream Class

First and Last Data Points in a Stream

Slicing and Converting Data Streams to String

Find the Middle Element of a Sliced Data Stream

Lesson 2: Filtering Data Streams with Kotlin Techniques

Filter Numbers Greater Than 20 in Kotlin

Filtering Strings by Length in Kotlin

Filter Even Numbers Using List Comprehension

Filtering Positive Even Numbers with Filter Function