Answer 1

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You only need to specify semicolons in cases where it is ambiguous to the compiler what you are trying to do, and the absence of a semicolon would result in an obvious compiler error.

The rule is: Don't worry about this and don't use semicolons at all (other than the two cases below). The compiler will tell you when you get it wrong, guaranteed. Even if you accidentally add an extra semicolon the syntax highlighting will show you it is unnecessary with a warning of "redundant semicolon".

The two common cases for semi-colons:

An enum class that has a list of enums and also properties or functions in the enum requires a ; after the enum list, for example:

enum class Things { ONE, TWO; fun isOne(): Boolean = this == ONE }

And in this case the compiler will tell you directly if you fail to do it correctly:

Error:(y, x) Kotlin: Expecting ';' after the last enum entry or '}' to close enum class body

Otherwise the only other common case is when you are doing two statements on the same line, mayb