Mastering High Performance with Kotlin

Compile-time constants

The const modifier allows you to declare compile-time constants. We can remove this modifier from our example and the version decompiled to Java will look as follows:

public final class MainKt {   private static final int compileTime = 5;   public static final int getCompileTime() {      return compileTime;   }   public static final int compileTimeFunction() {      return compileTime + compileTime;   }}

As you can see, now the MainKt class contains the extra getCompileTime() function. In the bytecode, you can see that the MainKt class also contains the static <clinit>()V function:

static <clinit>()VL0LINENUMBER 3 L0ICONST_5PUTSTATIC mastering/kotlin/performance/chapter6/constants/MainKt.compileTime : IRETURNMAXSTACK = 1MAXLOCALS = 0