Lesson 5: Turn messy input into trustworthy study tasks

Kotlin

Kotlin sequences: build a predictable data processing pipeline

Build a reading queue, compare eager and lazy processing, and choose a sequence only when its behavior fits your task.

Android Studio

Find Android app bugs with breakpoints and Logcat

Follow a reproducible debugging session, inspect an incorrect calculation, read crash evidence, and verify a focused repair.

Kotlin

Lesson 6: Give the study planner stable IDs and clear ownership

Move task updates into a small class, distinguish identity from titles, and protect the planner from accidental changes through shared collections.