Tag: kotlin

All the articles with the tag "kotlin".

• Kotlin is null-safe until it meets your Java code

  1 Apr, 2026

  Kotlin platform types cause delayed NullPointerException in Java interop. How read-only collections stay mutable and internal becomes public.

• Please don't suppose Kotlin developers know Java

  2 Jun, 2020

  8% of Kotlin developers never learned Java — and the ecosystem still assumes they did. Why this matters and what we can do about it.

• Kotlin indexed access operator: Replace get/set calls with [ ] syntax

  26 May, 2020

  How to implement custom indexed access operators in Kotlin, with a chessboard example. Explains the IntelliJ suggestion 'replace function call with indexed accessor'.

• Kotlin apply() for nested Java objects: stop writing endless setters

  18 May, 2020

  Use Kotlin's apply() scope function to build deeply nested Java objects without intermediate variables. Before/after examples with real API code.