In what cases is inline usage impossible or impractical?

• Member functions of classes with the private or internal modifier.
• Functions marked with @NoInline or @DontInline annotations.
• Functions containing local classes or anonymous objects that reference variables from the function's scope.
• Recursive functions.

Use is not advisable:

• Functions with a large amount of code. Excessive inlining increases the APK size.
• When a function is called many times in loops or other heavily used code sections.
• When a function contains try/catch blocks, which can affect JIT compiler optimizations.
• Functions called from Java code (since Java does not understand Kotlin's inline).