1. Kotlin에서 자주 사용되는 용어
1. Creating DTOs(POJOs/POCOs)2. Default values for function parameters3. Filtering a list4. String Interpolation5. Instance Checks6. Traversing a map/list of pairs7. Using ranges8. Read-only list9. Read-only map10. Accessing a map11. Lazy property12. Extensions Functions13. Create a Singleton14. If not null shorthand15. If not null and else shorthand16. Executing a statement if null17. Get first..