why kotlin has to assign a field var a default val...

# getting-started

[xxxifan]

why kotlin has to assign a field var a default value?it says "Property must be initialized or be abstract“

[bountin]

xxxifan: Because all Kotlin types are not null by default and therefore must be initialized with a not null value. (So no more NotNullPointer exceptions!)

If you want to have a nullable declaration, you can do this by adding a question mark to mark it as optional: e.g. Integer?

[xxxifan]

but the question is still here even if I set this variable as nullable

[jk]

Since it's not null by default you have to explicitly set nullable types to null

[victortong]

because fun can live by itself