When we talk about null, we should also talk about Kotlin and its null-safety.
First of all, all types (Int, String, ...) are non-null by default. If you want to allow null for a certain variable, you use the nullable type (Int?, String?, ...).
When dealing with nullable variables, one can use the Elvis operator:
val name: String? = customer?.name
name will be either a String or null if customer or customer.name is null. It won't throw if customer is null.
Non-null by default is the way it should be. I have never used Kotlin, but it sounds like they are doing things right.
I also love the term Elvis Operator!
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